diff --git a/craig/r4tomtv.c b/craig/r4tomtv.c
index a4e21a9..5998f8e 100644
--- a/craig/r4tomtv.c
+++ b/craig/r4tomtv.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "r4tosgi" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /***************************************************************************
 **
diff --git a/ray4-c/src/amiga.h b/ray4-c/src/amiga.h
index 46c7699..760eb94 100644
--- a/ray4-c/src/amiga.h
+++ b/ray4-c/src/amiga.h
@@ -1,3 +1,24 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
+
 /****************************************************************************
 **
 **  File:  amiga.h                            Author:  Steve Hollasch
diff --git a/ray4-c/src/r4_globals.h b/ray4-c/src/r4_globals.h
index f6b723a..3f716fb 100644
--- a/ray4-c/src/r4_globals.h
+++ b/ray4-c/src/r4_globals.h
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_hit.c b/ray4-c/src/r4_hit.c
index 6be1366..c26f2f0 100644
--- a/ray4-c/src/r4_hit.c
+++ b/ray4-c/src/r4_hit.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_image.h b/ray4-c/src/r4_image.h
index ea0b72f..82ba5f1 100644
--- a/ray4-c/src/r4_image.h
+++ b/ray4-c/src/r4_image.h
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_io.c b/ray4-c/src/r4_io.c
index 9f3415d..6a5d23b 100644
--- a/ray4-c/src/r4_io.c
+++ b/ray4-c/src/r4_io.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_main.c b/ray4-c/src/r4_main.c
index 7942439..d2b9eac 100644
--- a/ray4-c/src/r4_main.c
+++ b/ray4-c/src/r4_main.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_parse.c b/ray4-c/src/r4_parse.c
index fdc988c..6716d17 100644
--- a/ray4-c/src/r4_parse.c
+++ b/ray4-c/src/r4_parse.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_trace.c b/ray4-c/src/r4_trace.c
index 22a5a76..09e6eb2 100644
--- a/ray4-c/src/r4_trace.c
+++ b/ray4-c/src/r4_trace.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4_vec.c b/ray4-c/src/r4_vec.c
index a213182..531da2f 100644
--- a/ray4-c/src/r4_vec.c
+++ b/ray4-c/src/r4_vec.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/r4toiff.c b/ray4-c/src/r4toiff.c
index e1048f6..b7866e0 100644
--- a/ray4-c/src/r4toiff.c
+++ b/ray4-c/src/r4toiff.c
@@ -1,17 +1,23 @@
-/***********************************************************************
-**
-**  "ray4" is Copyright (c) 1991,1992,1993 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /***************************************************************************
 **
diff --git a/ray4-c/src/r4tosgi.c b/ray4-c/src/r4tosgi.c
index b2c6579..2b37e4c 100644
--- a/ray4-c/src/r4tosgi.c
+++ b/ray4-c/src/r4tosgi.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "r4tosgi" is Copyright (c) 1991,1992,1993 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /***************************************************************************
 **
diff --git a/ray4-c/src/ray4.h b/ray4-c/src/ray4.h
index 045abe5..820f2e6 100644
--- a/ray4-c/src/ray4.h
+++ b/ray4-c/src/ray4.h
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4-c/src/v4cross.c b/ray4-c/src/v4cross.c
index d32c209..1f67712 100644
--- a/ray4-c/src/v4cross.c
+++ b/ray4-c/src/v4cross.c
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 #include "vector.h"
 
diff --git a/ray4-c/src/v4normalize.c b/ray4-c/src/v4normalize.c
index f06cd7b..f919ddd 100644
--- a/ray4-c/src/v4normalize.c
+++ b/ray4-c/src/v4normalize.c
@@ -1,3 +1,24 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
+
 /****************************************************************************
 **
 **  File:  v4normalize.c                         Author:  Steve Hollasch
diff --git a/ray4-c/src/vector.h b/ray4-c/src/vector.h
index 2ccee72..bb80b07 100644
--- a/ray4-c/src/vector.h
+++ b/ray4-c/src/vector.h
@@ -1,3 +1,24 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
+
 /****************************************************************************
 //
 //  File:  vector.h                              Author:  Steve Hollasch
diff --git a/ray4-c/src/write_ilbm.c b/ray4-c/src/write_ilbm.c
index 46fcce2..b6ff309 100644
--- a/ray4-c/src/write_ilbm.c
+++ b/ray4-c/src/write_ilbm.c
@@ -1,3 +1,24 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
+
 /***************************************************************************
 **
 **  File: WriteILBM.c                           Author:  Steve R. Hollasch
diff --git a/ray4/src/r4_globals.h b/ray4/src/r4_globals.h
index f6b723a..471f7e2 100644
--- a/ray4/src/r4_globals.h
+++ b/ray4/src/r4_globals.h
@@ -1,17 +1,25 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
-
 File:  ray4.h
 
     This file contains the global variables and structures for the ray4 four-
diff --git a/ray4/src/r4_hit.cpp b/ray4/src/r4_hit.cpp
index 4457df3..6ecec06 100644
--- a/ray4/src/r4_hit.cpp
+++ b/ray4/src/r4_hit.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_image.h b/ray4/src/r4_image.h
index ea0b72f..82ba5f1 100644
--- a/ray4/src/r4_image.h
+++ b/ray4/src/r4_image.h
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_io.cpp b/ray4/src/r4_io.cpp
index 9f3415d..6a5d23b 100644
--- a/ray4/src/r4_io.cpp
+++ b/ray4/src/r4_io.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_main.cpp b/ray4/src/r4_main.cpp
index d3ce6d4..c19b82a 100644
--- a/ray4/src/r4_main.cpp
+++ b/ray4/src/r4_main.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_parse.cpp b/ray4/src/r4_parse.cpp
index f31b5b5..89219bd 100644
--- a/ray4/src/r4_parse.cpp
+++ b/ray4/src/r4_parse.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_trace.cpp b/ray4/src/r4_trace.cpp
index 75df90b..ea5fc9d 100644
--- a/ray4/src/r4_trace.cpp
+++ b/ray4/src/r4_trace.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/r4_vec.cpp b/ray4/src/r4_vec.cpp
index a213182..531da2f 100644
--- a/ray4/src/r4_vec.cpp
+++ b/ray4/src/r4_vec.cpp
@@ -1,14 +1,23 @@
-/*******************************************************************************
-"ray4" is Copyright (c) 1991,1992,1993,1996 by Steve R. Hollasch.
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/ray4.h b/ray4/src/ray4.h
index 6809b46..a6650db 100644
--- a/ray4/src/ray4.h
+++ b/ray4/src/ray4.h
@@ -1,14 +1,23 @@
-/*******************************************************************************
-Ray4 is Copyright (C) Steve Hollasch, 1991-1996
-
-All rights reserved.  This software may be freely copied, modified and
-redistributed, provided that this copyright notice is preserved in all copies.
-This software is provided "as is", without express or implied warranty.  You
-may not include this software in a program or other software product without
-also supplying the source, except by express agreement with the author (Steve
-Hollasch).  If you modify this software, please include a notice detailing the
-author, date and purpose of the modification.
-*******************************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /*******************************************************************************
 
diff --git a/ray4/src/vector.h b/ray4/src/vector.h
index 2ccee72..bb80b07 100644
--- a/ray4/src/vector.h
+++ b/ray4/src/vector.h
@@ -1,3 +1,24 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
+
 /****************************************************************************
 //
 //  File:  vector.h                              Author:  Steve Hollasch
diff --git a/wire4/copyright b/wire4/copyright
deleted file mode 100644
index f080ccd..0000000
--- a/wire4/copyright
+++ /dev/null
@@ -1,15 +0,0 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved. This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies. This software is provided "as is", without express
-**  or implied warranty. You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge. If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
diff --git a/wire4/psplot.c b/wire4/psplot.c
index 7626aa3..3485820 100644
--- a/wire4/psplot.c
+++ b/wire4/psplot.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "psplot" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/strcmpic.c b/wire4/strcmpic.c
index 15e2685..2d8c044 100644
--- a/wire4/strcmpic.c
+++ b/wire4/strcmpic.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "strcmpic" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/v3cross.c b/wire4/v3cross.c
index 32862d8..2bd0aaf 100644
--- a/wire4/v3cross.c
+++ b/wire4/v3cross.c
@@ -1,3 +1,23 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/v4cross.c b/wire4/v4cross.c
index fca691f..8f9c3bf 100644
--- a/wire4/v4cross.c
+++ b/wire4/v4cross.c
@@ -1,3 +1,23 @@
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/vector.h b/wire4/vector.h
index 6cf1f5b..451bd58 100644
--- a/wire4/vector.h
+++ b/wire4/vector.h
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 //
diff --git a/wire4/w4_display.c b/wire4/w4_display.c
index 2cbbc2c..c361911 100644
--- a/wire4/w4_display.c
+++ b/wire4/w4_display.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/w4_geometry.c b/wire4/w4_geometry.c
index 20068d0..c054984 100644
--- a/wire4/w4_geometry.c
+++ b/wire4/w4_geometry.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/w4_main.c b/wire4/w4_main.c
index b688949..4b2869a 100644
--- a/wire4/w4_main.c
+++ b/wire4/w4_main.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/w4_parse.c b/wire4/w4_parse.c
index 05e6711..0c9fc8d 100644
--- a/wire4/w4_parse.c
+++ b/wire4/w4_parse.c
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **
diff --git a/wire4/wire4.h b/wire4/wire4.h
index d83f0b8..6cde234 100644
--- a/wire4/wire4.h
+++ b/wire4/wire4.h
@@ -1,18 +1,23 @@
-
-/***********************************************************************
-**
-**  "wire4" is Copyright (c) 1991 by Steve R. Hollasch.
-**
-**  All rights reserved.  This software may be freely copied, modified
-**  and redistributed, provided that this copyright notice is preserved
-**  in all copies.  This software is provided "as is", without express
-**  or implied warranty.  You may not include this software in a program
-**  or other software product without also supplying the source, or
-**  without informing the end-user that the source is available for no
-**  extra charge.  If you modify this software, please include a notice
-**  detailing the author, date and purpose of the modification.
-**
-***********************************************************************/
+//**************************************************************************************************
+//  Copyright (c) 1991-2024 Steven R Hollasch
+//
+//  MIT License
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+//  and associated documentation files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use, copy, modify, merge, publish,
+//  distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all copies or
+//  substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+//  BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+//  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//**************************************************************************************************
 
 /****************************************************************************
 **