h6. [[WindowManager]] h6(. » [[WindowManager Messages|Messages]] h6((. » [[Message Codes|Message Codes]] h6(((. » [[Message_TaskInitialise]] h6((((. » Currently Active Object Pointer h2. Currently Active Object Pointer h4. Notes This is the pointer to the address of the last: # application started # error handler called # exit handler called Which allows [[OS_Module]] to determine whether a module can be killed. For Absolute files and other code loaded into application space, the CAO will typically be set to &8000, i.e. the base of application space. When a module task is started (e.g. via [[OS_Module 0]]), the CAO will be set to the address of the module. h4. See also * [[Message Codes]] * [[Message_TaskInitialise]] * [[OS_Module]] * [[OS_Module 0]] * [[Wimp_Poll]]