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===================================================================
--- trunk/doc/developer/lihata_format/cschem-sheet-v.svg	(revision 4301)
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Index: trunk/doc/developer/lihata_format/group.ID.svg
===================================================================
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+<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value -->
 <g id="edge17" class="edge">
-<title>dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
+<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
 <path fill="none" stroke="#000000" d="M1127.488,-89.6887C1122.9906,-80.6492 1117.9404,-70.4986 1113.2326,-61.0361"/>
 <polygon fill="#000000" stroke="#000000" points="1116.26,-59.2636 1108.672,-51.8695 1109.9928,-62.3817 1116.26,-59.2636"/>
 </g>
-<!-- dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
+<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
 <g id="node19" class="node">
-<title>dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
+<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
 <g id="a_node19"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib/children/detailed-attrib/children/prio" xlink:title="priority value">
 <ellipse fill="none" stroke="#000000" cx="1185.234" cy="-26.8701" rx="38.3684" ry="26.7407"/>
 <text text-anchor="middle" x="1185.234" y="-30.6701" font-family="Times,serif" font-size="14.00" fill="#000000">prio</text>
@@ -285,9 +285,9 @@
 </a>
 </g>
 </g>
-<!-- dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
+<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
 <g id="edge18" class="edge">
-<title>dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup13_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
+<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
 <path fill="none" stroke="#000000" d="M1154.6746,-89.6887C1158.9962,-80.8051 1163.8399,-70.8483 1168.3748,-61.5261"/>
 <polygon fill="#000000" stroke="#000000" points="1171.5489,-63.0023 1172.7761,-52.4787 1165.2542,-59.94 1171.5489,-63.0023"/>
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Index: trunk/doc/developer/lihata_format/group_ref.ID.svg
===================================================================
--- trunk/doc/developer/lihata_format/group_ref.ID.svg	(revision 4301)
+++ trunk/doc/developer/lihata_format/group_ref.ID.svg	(revision 4302)
@@ -49,9 +49,9 @@
 <path fill="none" stroke="#000000" d="M296.1838,-271.7813C296.1838,-263.7412 296.1838,-254.8289 296.1838,-246.2909"/>
 <polygon fill="#000000" stroke="#000000" points="299.6839,-246.1457 296.1838,-236.1457 292.6839,-246.1457 299.6839,-246.1457"/>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib -->
+<!-- dup15_/lht_tree_doc/comm/attrib -->
 <g id="node11" class="node">
-<title>dup14_/lht_tree_doc/comm/attrib</title>
+<title>dup15_/lht_tree_doc/comm/attrib</title>
 <g id="a_node11"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib" xlink:title=" a hash of attributes &#160;">
 <ellipse fill="none" stroke="#000000" cx="436.1838" cy="-208.4716" rx="43.6818" ry="27.6545"/>
 <text text-anchor="middle" x="436.1838" y="-212.7716" font-family="Times,serif" font-size="14.00" fill="#000000">ha:attrib</text>
@@ -58,9 +58,9 @@
 </a>
 </g>
 </g>
-<!-- /lht_tree_doc/comm/group_ref.ID&#45;&gt;dup14_/lht_tree_doc/comm/attrib -->
+<!-- /lht_tree_doc/comm/group_ref.ID&#45;&gt;dup15_/lht_tree_doc/comm/attrib -->
 <g id="edge10" class="edge">
-<title>/lht_tree_doc/comm/group_ref.ID&#45;&gt;dup14_/lht_tree_doc/comm/attrib</title>
+<title>/lht_tree_doc/comm/group_ref.ID&#45;&gt;dup15_/lht_tree_doc/comm/attrib</title>
 <path fill="none" stroke="#000000" d="M332.9671,-275.6762C352.586,-262.9023 376.7366,-247.1778 396.7433,-234.1514"/>
 <polygon fill="#000000" stroke="#000000" points="398.8543,-236.9535 405.3248,-228.564 395.0348,-231.0873 398.8543,-236.9535"/>
 </g>
@@ -175,9 +175,9 @@
 <path fill="none" stroke="#000000" d="M326.3094,-98.9195C353.0659,-86.4951 388.9309,-69.5394 420.1838,-53.7401 423.2674,-52.1812 426.4443,-50.5453 429.6311,-48.8827"/>
 <polygon fill="#000000" stroke="#000000" points="431.3569,-51.9295 438.5689,-44.1683 428.091,-45.7381 431.3569,-51.9295"/>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key -->
 <g id="node12" class="node">
-<title>dup14_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key</title>
 <g id="a_node12"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib/children/simple-attrib-key" xlink:title="attribute value without metadata (text node)">
 <ellipse fill="none" stroke="#000000" cx="436.1838" cy="-117.3173" rx="77.5641" ry="26.7407"/>
 <text text-anchor="middle" x="436.1838" y="-121.1173" font-family="Times,serif" font-size="14.00" fill="#000000">simple&#45;attrib&#45;key</text>
@@ -185,15 +185,15 @@
 </a>
 </g>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key -->
+<!-- dup15_/lht_tree_doc/comm/attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key -->
 <g id="edge11" class="edge">
-<title>dup14_/lht_tree_doc/comm/attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key</title>
+<title>dup15_/lht_tree_doc/comm/attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/simple&#45;attrib&#45;key</title>
 <path fill="none" stroke="#000000" d="M436.1838,-180.627C436.1838,-172.348 436.1838,-163.1443 436.1838,-154.3765"/>
 <polygon fill="#000000" stroke="#000000" points="439.6839,-154.3658 436.1838,-144.3659 432.6839,-154.3659 439.6839,-154.3658"/>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib -->
 <g id="node13" class="node">
-<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib</title>
 <g id="a_node13"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib/children/detailed-attrib" xlink:title=" attribute with metadata (hash node) ">
 <ellipse fill="none" stroke="#000000" cx="609.1838" cy="-117.3173" rx="77.1494" ry="27.6545"/>
 <text text-anchor="middle" x="609.1838" y="-121.6173" font-family="Times,serif" font-size="14.00" fill="#000000">ha:detailed&#45;attrib</text>
@@ -200,15 +200,15 @@
 </a>
 </g>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib -->
+<!-- dup15_/lht_tree_doc/comm/attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib -->
 <g id="edge12" class="edge">
-<title>dup14_/lht_tree_doc/comm/attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib</title>
+<title>dup15_/lht_tree_doc/comm/attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib</title>
 <path fill="none" stroke="#000000" d="M469.9506,-190.6797C494.6174,-177.6827 528.5358,-159.811 556.7191,-144.9611"/>
 <polygon fill="#000000" stroke="#000000" points="558.4335,-148.014 565.649,-140.2559 555.1704,-141.821 558.4335,-148.014"/>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value -->
 <g id="node14" class="node">
-<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
 <g id="a_node14"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib/children/detailed-attrib/children/value" xlink:title="attribute value">
 <ellipse fill="none" stroke="#000000" cx="593.1838" cy="-26.8701" rx="33.4697" ry="26.7407"/>
 <text text-anchor="middle" x="593.1838" y="-30.6701" font-family="Times,serif" font-size="14.00" fill="#000000">value</text>
@@ -216,15 +216,15 @@
 </a>
 </g>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value -->
 <g id="edge13" class="edge">
-<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/value</title>
 <path fill="none" stroke="#000000" d="M604.2963,-89.6887C602.8431,-81.4739 601.2276,-72.3415 599.6886,-63.6418"/>
 <polygon fill="#000000" stroke="#000000" points="603.12,-62.9462 597.9315,-53.7088 596.227,-64.1657 603.12,-62.9462"/>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
 <g id="node15" class="node">
-<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
 <g id="a_node15"><a xlink:href="tree.html#/lht_tree_doc/comm/attrib/children/detailed-attrib/children/prio" xlink:title="priority value">
 <ellipse fill="none" stroke="#000000" cx="682.1838" cy="-26.8701" rx="38.3684" ry="26.7407"/>
 <text text-anchor="middle" x="682.1838" y="-30.6701" font-family="Times,serif" font-size="14.00" fill="#000000">prio</text>
@@ -232,9 +232,9 @@
 </a>
 </g>
 </g>
-<!-- dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
+<!-- dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio -->
 <g id="edge14" class="edge">
-<title>dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup14_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
+<title>dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib&#45;&gt;dup15_/lht_tree_doc/comm/attrib/children/detailed&#45;attrib/children/prio</title>
 <path fill="none" stroke="#000000" d="M630.6913,-90.6693C638.9358,-80.4544 648.4155,-68.709 656.976,-58.1026"/>
 <polygon fill="#000000" stroke="#000000" points="659.7503,-60.2379 663.3073,-50.258 654.3031,-55.8415 659.7503,-60.2379"/>
 </g>
Index: trunk/doc/developer/lihata_format/polygon.ID.svg
===================================================================
--- trunk/doc/developer/lihata_format/polygon.ID.svg	(revision 4301)
+++ trunk/doc/developer/lihata_format/polygon.ID.svg	(revision 4302)
@@ -97,31 +97,31 @@
 <path fill="none" stroke="#000000" d="M298.2844,-187.4509C319.7454,-175.3558 346.6497,-160.0702 370.5,-146.1543 373.3148,-144.512 376.2198,-142.8032 379.1377,-141.0769"/>
 <polygon fill="#000000" stroke="#000000" points="381.0467,-144.0139 387.8527,-135.8943 377.4687,-137.9973 381.0467,-144.0139"/>
 </g>
-<!-- dup15_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID -->
+<!-- dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID -->
 <g id="node3" class="node">
-<title>dup15_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID</title>
+<title>dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID</title>
 <g id="a_node3"><a xlink:href="line.ID.svg" xlink:title="line.ID &#45;&gt;\n\n\n">
 <text text-anchor="middle" x="35.5" y="-39.8" font-family="Times,serif" font-size="14.00" fill="#000000">line.ID &#45;&gt;</text>
 </a>
 </g>
 </g>
-<!-- /lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup15_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID -->
+<!-- /lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID -->
 <g id="edge2" class="edge">
-<title>/lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup15_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID</title>
+<title>/lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/line.ID</title>
 <path fill="none" stroke="#000000" d="M66.5365,-91.7436C62.3539,-83.0858 57.6438,-73.3362 53.1806,-64.0976"/>
 <polygon fill="#000000" stroke="#000000" points="56.3299,-62.5705 48.8283,-55.0888 50.0269,-65.6156 56.3299,-62.5705"/>
 </g>
-<!-- dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID -->
+<!-- dup17_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID -->
 <g id="node4" class="node">
-<title>dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID</title>
+<title>dup17_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID</title>
 <g id="a_node4"><a xlink:href="arc.ID.svg" xlink:title="arc.ID &#45;&gt;\n\n\n">
 <text text-anchor="middle" x="123.5" y="-39.8" font-family="Times,serif" font-size="14.00" fill="#000000">arc.ID &#45;&gt;</text>
 </a>
 </g>
 </g>
-<!-- /lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID -->
+<!-- /lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup17_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID -->
 <g id="edge3" class="edge">
-<title>/lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup16_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID</title>
+<title>/lht_tree_doc/comm/polygon.ID/children/outline&#45;&gt;dup17_/lht_tree_doc/comm/polygon.ID/children/outline/children/arc.ID</title>
 <path fill="none" stroke="#000000" d="M92.4635,-91.7436C96.6461,-83.0858 101.3562,-73.3362 105.8194,-64.0976"/>
 <polygon fill="#000000" stroke="#000000" points="108.9731,-65.6156 110.1717,-55.0888 102.6701,-62.5705 108.9731,-65.6156"/>
 </g>
Index: trunk/doc/developer/lihata_format/root_conf.lht
===================================================================
--- trunk/doc/developer/lihata_format/root_conf.lht	(nonexistent)
+++ trunk/doc/developer/lihata_format/root_conf.lht	(revision 4302)
@@ -0,0 +1,22 @@
+ha:lht_tree_doc { ha:roots {
+
+	ha:sch-rnd-conf-v1 {
+		type=li
+		desc=complete sch-rnd configuration tree
+		li:children {
+			ha:overwrite {
+				type=ha
+				desc={overwrite values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>}
+			}
+			ha:prepend {
+				type=ha
+				desc={prepend values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>}
+			}
+			ha:append {
+				type=ha
+				desc={append values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>}
+			}
+		}
+	}
+
+}}
Index: trunk/doc/developer/lihata_format/root_sheet.lht
===================================================================
--- trunk/doc/developer/lihata_format/root_sheet.lht	(revision 4301)
+++ trunk/doc/developer/lihata_format/root_sheet.lht	(revision 4302)
@@ -6,6 +6,7 @@
 		li:children {
 			sy:obj_indirect.1 = {/lht_tree_doc/comm/group.ID}
 			sy:obj_direct.2   = {/lht_tree_doc/comm/group.ID}
+			sy:conf = {/lht_tree_doc/roots/sch-rnd-conf-v1}
 		}
 	}
 }}
Index: trunk/doc/developer/lihata_format/tree.html
===================================================================
--- trunk/doc/developer/lihata_format/tree.html	(revision 4301)
+++ trunk/doc/developer/lihata_format/tree.html	(revision 4302)
@@ -15,6 +15,15 @@
 <tr id="/lht_tree_doc/roots/cschem-buffer-v*/children/obj_indirect.1"><td> &nbsp;ha:obj_indirect.1 <td> &nbsp; <td> &nbsp; <td> <a href="#/lht_tree_doc/comm/group.ID"> Group of concrete objects  -&gt; </a>
 <tr id="/lht_tree_doc/roots/cschem-buffer-v*/children/obj_direct.2"><td> &nbsp;ha:obj_direct.2 <td> &nbsp; <td> &nbsp; <td> <a href="#/lht_tree_doc/comm/group.ID"> Group of concrete objects  -&gt; </a>
 </table>
+<h3 id="/lht_tree_doc/roots/sch-rnd-conf-v1">li:sch-rnd-conf-v1</h3>
+<p>
+<table border=0 cellspacing=0>
+<tr><th align=left> type:name <th align=left> value <th align=left> <a href="#ver">ver</a> <th align=left> description
+<tr id="/lht_tree_doc/roots/sch-rnd-conf-v1"><td> li:sch-rnd-conf-v1 <td> &nbsp; <td> &nbsp; <td> complete sch-rnd configuration tree
+<tr id="/lht_tree_doc/roots/sch-rnd-conf-v1/children/overwrite"><td> &nbsp;ha:overwrite <td> &nbsp; <td> &nbsp; <td> overwrite values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>
+<tr id="/lht_tree_doc/roots/sch-rnd-conf-v1/children/prepend"><td> &nbsp;ha:prepend <td> &nbsp; <td> &nbsp; <td> prepend values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>
+<tr id="/lht_tree_doc/roots/sch-rnd-conf-v1/children/append"><td> &nbsp;ha:append <td> &nbsp; <td> &nbsp; <td> append values while merging; children: a full or partial <a href="../../conf/groups.html#tree">config tree</a>
+</table>
 <h3 id="/lht_tree_doc/roots/std_devmap.v*">li:std_devmap.v*</h3>
 <p>
 <table border=0 cellspacing=0>
@@ -41,6 +50,7 @@
 <tr id="/lht_tree_doc/roots/cschem-sheet-v*"><td> li:cschem-sheet-v* <td> &nbsp; <td> &nbsp; <td> schematic sheet
 <tr id="/lht_tree_doc/roots/cschem-sheet-v*/children/obj_indirect.1"><td> &nbsp;ha:obj_indirect.1 <td> &nbsp; <td> &nbsp; <td> <a href="#/lht_tree_doc/comm/group.ID"> Group of concrete objects  -&gt; </a>
 <tr id="/lht_tree_doc/roots/cschem-sheet-v*/children/obj_direct.2"><td> &nbsp;ha:obj_direct.2 <td> &nbsp; <td> &nbsp; <td> <a href="#/lht_tree_doc/comm/group.ID"> Group of concrete objects  -&gt; </a>
+<tr id="/lht_tree_doc/roots/cschem-sheet-v*/children/conf"><td> &nbsp;li:conf <td> &nbsp; <td> &nbsp; <td> <a href="#/lht_tree_doc/roots/sch-rnd-conf-v1">complete sch-rnd configuration tree -&gt; </a>
 </table>
 <h2> Common subtrees </h2>
 <p>Each table below describes a subtree that usually does not specify a whole tree (thus they are usually not a valid file on their own). These subtrees are described in a separate table because they are used from multiple other trees.
Index: trunk/doc/developer/lihata_format/tree.txt
===================================================================
--- trunk/doc/developer/lihata_format/tree.txt	(revision 4301)
+++ trunk/doc/developer/lihata_format/tree.txt	(revision 4302)
@@ -9,6 +9,14 @@
  ha:obj_indirect.1             Group of concrete objects ->
  ha:obj_direct.2               Group of concrete objects ->
 
+li:sch-rnd-conf-v1
+
+type:name           value ver description
+li:sch-rnd-conf-v1            complete sch-rnd configuration tree
+ ha:overwrite                 overwrite values while merging; children: a full or partial config tree
+ ha:prepend                   prepend values while merging; children: a full or partial config tree
+ ha:append                    append values while merging; children: a full or partial config tree
+
 li:std_devmap.v*
 
 type:name              value   ver description
@@ -32,6 +40,7 @@
 li:cschem-sheet-v*            schematic sheet
  ha:obj_indirect.1            Group of concrete objects ->
  ha:obj_direct.2              Group of concrete objects ->
+ li:conf                      complete sch-rnd configuration tree ->
 
 Common subtrees