This is an inbuilt function function provided by PPWIZARD.
This function is used to output a debug line. The line is only output if debug mode is currently on.
The DebugInc() and DebugDec() call can be used to make your output easier to understand. You may also wish to have a look at the IsDebugOn() routine.
The function takes a single parameter and that is the line to be output.