This specification may be used to specify a ‘top level’ for all subsequent HELPKEY fields until another HELPLIB specification is found. The specification may appear anywhere in an Interface File.
The field is of the form:
where help_top_level_spec is a character string to be inserted (with an intervening space) in front of
any string specified in subsequent HELPKEY fields as the Interface File is parsed – it may be a blank
character constant to nullify the effect of an earlier HELPLIB field.
Thus, assuming that the help file for the program DISP is DISP_DIR:DISP and that help text for each parameter is held in subtopic parameter-name of subtopic PARAMETERS of topic DISP, then the Interface File for program DISP could be:
Note that the use of multiple HELPLIB fields here is purely to show the effects – there would normally be only one HELPLIB specification in an Interface File.