Improve comment to explain glyph ordering

diff --git a/bedstead.c b/bedstead.c
index 47cff2cfc259450ba1a458c20c82acc72bf85eb8..15cb39be06bb50e989d3c923e458ebc1ed4f75d1 100644 (file)
--- a/bedstead.c
+++ b/bedstead.c
@@ -506,7 +506,9 @@ static struct glyph {
 
  /*
   * The other batch of glyphs were specially designed for this font.
-  * These are kept sorted by Unicode code point.
+  * These are kept sorted by Unicode code point.  Glyphs accessed
+  * using OpenType features are next to their originals, even when
+  * they also have Private Use Area mappings.
   */
 
  /* Basic Latin */