Section 8.2: Compiling help files Up Chapter 8: Help system Section 8.4: Decompiling 

8.3 help in programs

8.3.1 Within 4GL

CALL showhelp(3)
will display message number 3 from the current helpfile on the screen help line.

8.3.2 At runtime

The user presses the help key (default = CTRL-W) in any implemented command (Currently only menus have help support)
 Section 8.2: Compiling help files Up Chapter 8: Help system Section 8.4: Decompiling