The name of the file containing the online help.
A character string. Can be reset by an application program.
$HelpFile gives the name of a file containing online help topics.
Set by the application program to the name of a file containing the online help information. By changing the value of $HelpFile, an application can use different help files at different times during a session. The default help file is ZIM.HLP.
The file name should include the directory path. The special file path indicator characters can be used.
let $helpfile = “c:\myapp\applic.hlp”