Default shortcut: +
The command can be used when stepping through a program in online mode, for example for debugging purposes.
If the application program does not contain any calls, will jump back to the start of the application. If however, you previously have stepped into a called POU, will jump back to calling instruction. In case of nested calls, will lead you back through the hierarchy of callers step-by-step. This allows you to go back and step into another called POU.