diff --git a/Documentation/git-interpret-trailers.adoc b/Documentation/git-interpret-trailers.adoc
index 9f4c84abfd..5cf3895952 100644
--- a/Documentation/git-interpret-trailers.adoc
+++ b/Documentation/git-interpret-trailers.adoc
@@ -115,6 +115,16 @@ key: This is a very long value, with spaces and
   newlines in it.
 ------------------------------------------------
 
+OTHER RULES
+-----------
+
+What was covered in the previous section are the rules that are relevant
+for regular use. The following points are included for completeness.
+
+This command ignores comment lines (see `core.commentString` in
+linkgit:git-config[1]). This is for use with the `prepare-commit-msg`
+and `commit-msg` hooks.
+
 OPTIONS
 -------
 `--in-place`::