Source position: mui.pas line 3460
type tMUI_CustomClass = record
mcc_UserData: APTR;
mcc_UtilityBase: pLibrary;
mcc_DOSBase: pLibrary;
mcc_GfxBase: pLibrary;
mcc_IntuitionBase: pLibrary;
mcc_Super: pIClass;
mcc_Class: pIClass;
end;