Index: 07_io/export_bom/index.html
===================================================================
--- 07_io/export_bom/index.html	(revision 8213)
+++ 07_io/export_bom/index.html	(revision 8214)
@@ -8,6 +8,13 @@
 Exports Bill of Materials, which is a list of components to purchase for
 building the circuit, typically sorted by component type. Output format
 is controlled by user configured templates.
+<p>
+The templating system is the same as <a href="http://www.repo.hu/projects/pcb-rnd/user/07_io/3_3_export_bom/index.html">
+pcb-rnd's export_bom</a>, with the following local differences:
+<ul>
+	<li> <i>sym</i> used instead of <i>subc</i>, e.g. "sym.a.device"; more generally, "subcircuit" replaced with "symbol"
+	<li> there's no %author% and %title%
+</ul>
 
 <H3 autotoc="yes"> Attribute usage </h3>
 <p>