rk the application busy. When an application is busy, the user may continue to interact with it.</P>
<P>
<CODE>
MSG_GEN_APPLICATION_MARK_NOT_BUSY</CODE>
 removes the busy state marker. This message is automatically sent to the application object when the operation that initiated the busy state completes.</P>
<P>
<CODE>
MSG_GEN_APPLICATION_HOLD_UP_INPUT</CODE>
<A NAME="IX_Input:holding up">
 </A>
 instructs the User Interface to place all input events into a special &quot;hold-up&quot; queue until the input 