diff --git a/lib/LaTeXML/Engine/plain.pool.ltxml b/lib/LaTeXML/Engine/plain.pool.ltxml
index afa62213c..977fe5ab2 100644
--- a/lib/LaTeXML/Engine/plain.pool.ltxml
+++ b/lib/LaTeXML/Engine/plain.pool.ltxml
@@ -536,9 +536,10 @@ DefConstructor('\ltx@centerline{}', sub {
alias => '\centerline',
bounded => 1);
-# These should be 0 width, but perhaps also shifted?
-DefMacro('\llap{}', '\hbox to 0pt{\hss#1}');
-DefMacro('\rlap{}', '\hbox to 0pt{#1\hss}');
+# rely on RTL trickery to shift the \llap content over the previous text (see CSS)
+# the zero-width space prevents merging the two boxes in a single ltx:text
+DefMacro('\llap{}', '\hbox to 0pt{\@ADDCLASS{ltx_llap}' . "\x{200B}" . '\hbox{\@ADDCLASS{ltx_llap_content}#1}}');
+DefMacro('\rlap{}', '\hbox to 0pt{\@ADDCLASS{ltx_rlap}#1}');
DefMacroI('\m@th', undef, '\mathsurround=0pt ');
diff --git a/lib/LaTeXML/resources/CSS/LaTeXML.css b/lib/LaTeXML/resources/CSS/LaTeXML.css
index b954b01b1..31949fec5 100644
--- a/lib/LaTeXML/resources/CSS/LaTeXML.css
+++ b/lib/LaTeXML/resources/CSS/LaTeXML.css
@@ -510,3 +510,15 @@ cite { font-style: normal; }
.ltx_overlay {position:relative; }
.ltx_overlay > span:nth-child(2) {position:absolute; left:0; }
+
+/* \llap, \rlap */
+.ltx_llap, .ltx_rlap {
+ white-space: nowrap; /* width 0pt causes extreme wrapping otherwise */ }
+
+/* shift \llap over the previous text by shifting text direction */
+.ltx_llap {
+ direction: rtl; }
+
+/* restore LTR inside \llap */
+.ltx_llap_content {
+ direction: ltr; }
diff --git a/t/alignment/halignatt.xml b/t/alignment/halignatt.xml
index 63ca62606..0f3092bec 100644
--- a/t/alignment/halignatt.xml
+++ b/t/alignment/halignatt.xml
@@ -50,7 +50,7 @@
|
6 |
51–59 |
- .95* |
+ .95* |
| * (first quarter only) |
diff --git a/t/ams/mathtools.xml b/t/ams/mathtools.xml
index 0d49e03bf..36b204e92 100644
--- a/t/ams/mathtools.xml
+++ b/t/ams/mathtools.xml
@@ -7120,7 +7120,7 @@ Then a switch of tag forms.
<tag close=" ">11</tag>Stepped lines
-