Add brief description of files.

diff --git a/Documentation/devel/doc-work.itexi b/Documentation/devel/doc-work.itexi
index c7bb20d8f5aab06bd61375fa93e67761511a94cc..6a571ec1c9d7e62fc85a2f9fb8d65e366dcb3b99 100644 (file)
--- a/Documentation/devel/doc-work.itexi
+++ b/Documentation/devel/doc-work.itexi
@@ -57,6 +57,7 @@ limited documentation help.
 
 @menu
 * Texinfo introduction::        
+* Documentation files::         
 * Sectioning commands::         
 * LilyPond formatting::         
 * Text formatting::             
@@ -82,6 +83,26 @@ You can learn most of what you need to know from this; if you want
 to do anything fancy, discuss it on @code{lilypond-devel} first.}
 
 
+@node Documentation files
+@subsection Documentation files
+
+The user manuals lives in @file{Documentation/user/}.  In
+particular, the files @file{lilypond-learning.ly} (LM),
+@file{lilypond.itely} (NR), @file{music-glossary.tely} (MG), and
+@file{lilypond-program} (AU).  Each chapter is written in a
+separate file (ending in @file{.itely} for files containing
+lilypond code, and @file{.itexi} for files without lilypond code);
+see the @qq{main} file for each manual to determine the filename
+of the specific chapter you wish to modify.
+
+Developer manuals live in @file{Documentation/devel}.  Currently
+there is only one; @file{contrib-guide.texi}.
+
+Although snippets are part of documentation, they are not
+(directly) part of the manuals.  For information about how to
+modify them, see @ref{LSR work}.
+
+
 @node Sectioning commands
 @subsection Sectioning commands