nmiCtrlTileButton..::..GroupID Property
   defines a group of collapsible groups to be toggeled by a button. Syntax: "GroupName:ID"
   If a user clickes a button with a set GroupID, all Collabpsible groups in the GroupName will be closed the one with the ID will be opened
   
                
    Namespace: 
   nsCDEngine.Engines.NMIServiceAssembly: C-DEngine (in C-DEngine.dll)