Index: lihata_format/index.html
===================================================================
--- lihata_format/index.html	(revision 4286)
+++ lihata_format/index.html	(revision 4287)
@@ -48,7 +48,9 @@
 	<br><a href="examples/example.devmap"> (sample file) </a>
 
 <tr> <td> buffer.lht           <td> li:cschem-buffer-v
-	<td> buffer content save; aside from the header, it's the same as a sheet (ha:cschem-sheet-v*)
+	<td> <a href="tree.html#/lht_tree_doc/roots/cschem-buffer-v*">buffer content save</a>; aside from the header, it's the same as a sheet (ha:cschem-sheet-v*)
+	<br><a href="cschem-buffer-v.svg"> (struct drawing) </a>
+	<br><a href="examples/example.buff"> (sample file) </a>
 
 <tr> <td> <b>project.lht<b>    <td> ha:geda-project-v1 or ha:coraleda-project-v1
 	<td> A project file (documented in pcb-rnd)
Index: lihata_format/root_buffer.lht
===================================================================
--- lihata_format/root_buffer.lht	(nonexistent)
+++ lihata_format/root_buffer.lht	(revision 4287)
@@ -0,0 +1,11 @@
+ha:lht_tree_doc { ha:roots {
+
+	ha:cschem-buffer-v* {
+		type=li
+		desc={Buffer content (direct/indirect: same meaning as schematic sheet)}
+		li:children {
+			sy:obj_indirect.1 = {/lht_tree_doc/comm/group.ID}
+			sy:obj_direct.2   = {/lht_tree_doc/comm/group.ID}
+		}
+	}
+}}