diff -r a9ac5dea9561 -r f4aae4fdc1bc xlinkobj.h
--- a/xlinkobj.h	Wed Apr 25 16:02:54 2007 +0000
+++ b/xlinkobj.h	Wed Apr 25 16:02:54 2007 +0000
@@ -5,6 +5,8 @@
 
 enum XLinkState {undefinedXLink,initXLink,activeXLink,deleteXLink};
 
+/*! \brief xlinks are used to draw arbitrary connections between branches (BranchObj) in the map. */
+
 /////////////////////////////////////////////////////////////////////////////
 class XLinkObj:public MapObj {
 public: