Comment new SFNT tags
diff --git a/src/hb-open-file-private.hh b/src/hb-open-file-private.hh
index e9891be..f25522e 100644
--- a/src/hb-open-file-private.hh
+++ b/src/hb-open-file-private.hh
@@ -190,11 +190,11 @@
struct OpenTypeFontFile
{
- static const hb_tag_t CFFTag = HB_TAG ('O','T','T','O');
- static const hb_tag_t TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 );
- static const hb_tag_t TTCTag = HB_TAG ('t','t','c','f');
- static const hb_tag_t TrueTag = HB_TAG ('t','r','u','e');
- static const hb_tag_t Typ1Tag = HB_TAG ('t','y','p','1');
+ static const hb_tag_t CFFTag = HB_TAG ('O','T','T','O'); /* OpenType with Postscript outlines */
+ static const hb_tag_t TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 ); /* OpenType with TrueType outlines */
+ static const hb_tag_t TTCTag = HB_TAG ('t','t','c','f'); /* TrueType Collection */
+ static const hb_tag_t TrueTag = HB_TAG ('t','r','u','e'); /* Apple obsolete tag */
+ static const hb_tag_t Typ1Tag = HB_TAG ('t','y','p','1'); /* Apple obsolete tag */
inline hb_tag_t get_tag (void) const { return u.tag; }
