The Action Block Call Trace panel shows the active procedure step and the action blocks that are called by the procedure step or its action blocks. The panel is not static. It is a dynamic listing that shows the sequence of calls as they are issued by the procedure step or its action blocks. The panel appears each time you enter or return to a procedure step or an action block that has been generated with debug support. It can also be requested from the Action Diagram Trace panel.
Action Block Call Trace COMMAND =—> SCROLL ===> HALF Action Block Name At Stmt # PSCUSTOM DIALOG MGR ABBIL1 35 ABBIL2 47 ENTERING ===>
For each call, the panel shows the name of the action block or procedure step and the statement number from which it was called. In the figure, the action block ABBIL1 was called by statement number 35 of the procedure step PSCUSTOM. The action block ABBIL2 was called by statement number 47 of ABBIL1. Procedure step PSCUSTOM was called by the Dialog Manager.
The Action Block Call Trace panel can be thought of as a stack that shows the hierarchy of action block calls within a procedure step. When a call is made, an entry is added to the stack and displayed on the screen. When you return from the call, the last entry is deleted from the stack and from the screen. When you transfer to another procedure, the stack is cleared and a new panel begins.
To begin execution of the procedure step or action block, press the Enter key. If the procedure step or action block was generated with the Debug option, the Action Diagram Trace panel will appear.
The TRACE command lets you turn the action diagram trace on and off. If TRACE is OFF, no action diagram trace panels are displayed. To resume the display of action diagrams, you must type TRACE ON or T ON in the COMMAND line and press Enter.
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