Обьясните механизм

[AndyD]

Если по научному

 container               stack = xSession::xppCallStack();
TreeNodePath            Path;
 TreeNode    tn;
;
 Path = conPeek(stack, 3);
 if (Path)
 {
     tn = TreeNode::findNode(Path);
     while (tn && !tn.AOTObjectNode())
         tn = tn.AOTparent();
 
     if (tn)
         Path = tn.treeNodePath();
     else
         Path = "";
 }
 return path;