Doc -- Add Extending to @seealso list.

diff --git a/Documentation/contributor/doc-work.itexi b/Documentation/contributor/doc-work.itexi
index d6419ad14b7e7d324788de603c4a3e858d0da93d..ea17b08de9b69b634a39917b50ed8a0dbc7a6474 100644 (file)
--- a/Documentation/contributor/doc-work.itexi
+++ b/Documentation/contributor/doc-work.itexi
@@ -815,6 +815,9 @@ Notation Reference:
 Application Usage:
 @@rprogram@{blah@}.
 
+Extending LilyPond:
+@@rextend@{frob@}.
+
 Installed Files:
 @@file@{path/to/dir/blahz@}.