+LilyPond development is a fairly complicated matter. LilyPond is
+a large, (mostly) stable project. At any point in time, we have
+between 5 and 25 active contributors. In order to help new
+contributors, and to keep the whole system (mostly) stable, we
+have written a manual for contributors.
+
+@divClass{keep-bullets}
+@itemize
+
+@item @uref{contributor/index.html, Contributor's guide (split HTML)}:
+the manual is split between many HTML pages.
+@emph{(small download for each page)}
+
+@item @uref{contributor-big-page.html, Contributor's guide (big HTML)}:
+read this manual as one huge HTML page.
+@emph{(large single download, around 10? Mb)}
+
+@item @uref{contributor.pdf, contributor.pdf}:
+download as a PDF file.
+@emph{(large single download, 2.8 Mb)}