help

(help [topic] [helpfile] [command])

The help function displays the help window with a specified help topic.

Arguments

topic

Keyword in help file (optional)

helpfile

Name of the compiled .chm help file [Windows®] (optional)

command

Help action to be performed ("1" ..."14")

Return Value

The function returns nil, if the help file does not exist; otherwise, the function returns the name of help file.

Examples

: (help "Line")

: (help "Example" "myhelp.chm")