Merge pull request #111 from OpenGeoMetadata/id-guidelines

id allowed characters

Author: karenmajewicz

docs/ogm-aardvark/id.csv

@@ -4,9 +4,9 @@ Field Name,id
 Field Type,String
 Obligation,Required
 Multivalued,False
-Purpose,To provide a unique alpha-numeric ID for the item that will act as the primary key in Solr and to create a unique landing page for the item.
-Entry Guidelines,"Enter a string of alpha-numeric characters separated by dashes. The ID must be globally unique across all institutions in your GeoBlacklight index."
-Commentary,"This field makes up the URL for the resource in GeoBlacklight. It is visible to the user and is used to create permalinks. If having a readable slug is desired, it is common to use the form institution-keyword1-keyword2."
+Purpose,To provide a unique text string for the item that will act as the primary key in Solr and to create a unique landing page for the item.
+Entry Guidelines,"Enter a string that only contains alpha-numeric characters (A-Z, a-z, 0-9), hyphens, underscores, and colons. This ID must be unique within your instance's GeoBlacklight index."
+Commentary,"The value of this field will appear in Geoblacklight's URL for the item.  It is visible to the user and is used to create permalinks.  Although it may be possible to use other non-Latin or punctuation characters, this is not recommended, as these characters may get percent-escaped in the URLs, or even lead to broken links or other problems.  Since it is common to include records from other institutions, it is recommended that any records you create are prefixed with the short form of your institution's name to avoid collisions with records from other providers."
 Controlled Vocabulary,No
 Example Value,"""princeton-rv042w38t"""
 Element Set,GBL