showhelp()
Displays a runtime help text.
Syntax
showhelp(
   number INTEGER )
- number is the help message number in the current help file.
 
Usage
The showhelp() function displays a runtime help text, corresponding
 to its specified argument, from the current help file defined by the
 OPTIONS HELP FILE
 instruction.
In GUI mode, the help text will be displayed in a new pop-up window. In TUI mode, the help text is displayed in the whole screen.