From c58ecde93737aa68bd5dda9c4c72193dcaab3cf0 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 4 Dec 2017 10:29:27 -0800
Subject: [PATCH] MANUAL: note on extensions in gfm.

---
 MANUAL.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/MANUAL.txt b/MANUAL.txt
index c1e8aa7a0..5d5e9ccdb 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -3860,8 +3860,9 @@ extensions on `commonmark`:
 
     These can all be individually disabled. Note, however, that
     `commonmark` and `gfm` have limited support for extensions:
-    extensions other than those listed above (and `smart`) will have
-    no effect on `commonmark` or `gfm`.
+    extensions other than those listed above (and `smart` and
+    `raw_tex`) will have no effect on `commonmark` or `gfm`.
+    And `raw_tex` only affects `gfm` output, not input.
 
 Extensions with formats other than Markdown
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