Document "?debug=1" feature

diff --git a/yarrg/web/devel b/yarrg/web/devel
index 063d641cba509f3e6422dd53a02bdb3c339d109e..513d50b284411f2516f3a70c0f3c3a7291cd358a 100755 (executable)
--- a/yarrg/web/devel
+++ b/yarrg/web/devel
@@ -88,6 +88,11 @@ gives you the source code for the pages you are now looking at.
 Each of these allows you to download its own source code so you
 can get both the testing and the main version of the website.
 
+<p>
+
+You can add the form parameter <kbd>?debug=1</kbd> to each of the
+above to get a version of the site with debugging output enabled.
+
 <h3>Data</h3>
 
 <kbd>rsync rsync.yarrg.chiark.net::yarrg/</kbd><br>