The function allows to display a text in the "Debug" window of the process D2000 KOMprocess. If the communication tracing level "Screen & Disc" is checked, then the log is to be written also into a trace file (line_name.log) of the line. If a line with required LnId does not exist or the parameter LnId is zero, then the text is to be displayed on the screen and saved into the system Event log, the category Application.