<@topic name="CommonRules" title="Commonly used rules"> List of commonly used rules In order to define | Use the following rules Allowed model elements | @definePalette!, @canInsert! How elements are composed and connected | @canInsert!, @canRemove!, @canReplace!, @canConnectFrom!, @canConnectTo!, @canDisconnect!, @isCyclicConnection! How elements are edited | @canRename!, @definePropertyEditor!, @definePropertyGroups! How elements are created | @setupUnit!, @dropPaletteItem!, @dropSearchItem! How elements are drawn | @defineShape! Popup menus | @defineContextMenu!, @defineSelectionMenu!, @defineConnectMenu!, @defineDanglingMenu! (c) SAP AG 2003-2006. All rights reserved.