--- /dev/null
+\version "2.10.0"
+%% +.ly: Be the first .ly file for lys-to-tely.py.
+%% Better to make lys-to-tely.py include "introduction.texi" or
+%% other .texi documents too?
+
+\header{
+texidoc = #(string-append "
+@unnumbered Introduction
+
+This document shows examples from the
+@uref{http://lsr@/.dsi@/.unimi@/.it,LilyPond Snippet Repository}.
+
+In the web version of this document, you can click on the file name
+or figure for each example to see the corresponding input file.
+
+This document is for LilyPond version
+" (lilypond-version) "." )
+}
+
+% make sure .png is generated.
+\lyrics { " " }