1 files changed, 6 insertions, 0 deletions
diff --git a/man.cgi.8 b/man.cgi.8
index 920330fd..39774070 100644
--- a/man.cgi.8
+++ b/man.cgi.8
@@ -43,6 +43,12 @@ either a name of a manual page or an
 using the syntax described in the
 .Xr apropos 1
 manual; filling this in is required for each search.
+.Pp
+The expression is broken into words at whitespace.
+Whitespace characters and backslashes can be escaped
+by prepending a backslash.
+The effect of prepending a backslash to another character is undefined;
+in the current implementation, it has no effect.
 .It
 A
 .Dq Submit