Index: index.html
===================================================================
--- index.html	(revision 18328)
+++ index.html	(revision 18329)
@@ -69,11 +69,16 @@
 A job is a script that contains zero or more export directives, separated
 by semicolons or newlines. An export directive is one of these:
 <pre>
+desc text
 prefix path
 plugin name [--option value] [--option value] ...
 write outfile=layergrp[,layergrp,...]
 </pre>
 <p>
+desc is a free form one-liner that describes what the job is for. Multiple
+desc directives may be present (to bypass the limitation that the text can
+not contain newlines).
+<p>
 The prefix directive sets up a file name prefix that is active until the
 next prefix directive or end of the script. Before the first prefix directive
 the prefix is an empty string. Any outfile will be prefixed with the current
@@ -101,6 +106,7 @@
 			ha:cam {
 				li:jobs {
 					doc_png {
+						desc export top and bottom copper and silk in 600 DPI pngs
 						prefix doc/
 						plugin png --dpi 600
 						write top.png=top-copper,top-silk