document a bit this solver

git-svn-id: https://svn.erp5.org/repos/public/erp5/sandbox/amount_generator@37511 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_simulation/PortalTypeTemplateItem/portal_solvers/Trade%20Model%20Solver.xml

@@ -54,6 +54,12 @@
               <tuple/>
             </value>
         </item>
+        <item>
+            <key> <string>content_icon</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
         <item>
             <key> <string>contributor_list</string> </key>
             <value>
@@ -62,7 +68,8 @@
         </item>
         <item>
             <key> <string>description</string> </key>
-            <value> <string>The Trade Model Solver solves the divergence by accepting the decision and updating a simulation movement, and also updates trade model related movements.</string> </value>
+            <value> <string>The Trade Model Solver solves a quantity divergence on an delivery line by accepting the decision and updating a simulation movement, and also updates trade model related movements.\n
+It must be used as a solver for quantity divergence on input lines.</string> </value>
         </item>
         <item>
             <key> <string>factory</string> </key>

bt5/erp5_simulation/bt/revision

-141
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+142
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