DAT extension.ĪutoCAD Electrical toolset defaults to icon menu ACE_MENU.DAT (where = IEEE, JIC, IEC, IEC-60617, GB, HYD, JIS, PID, or PNEU) for schematic symbols and ACE_PANEL_MENU.DAT for panel symbols. Each menu is driven by a text file with a. AutoCAD Electrical toolset supplies two default icon menus: one for schematic symbols and the other for panel symbols.