Chapter 4 289
Command Definition F-K
HELP
Enter the HELP command without specifying any parameters to invoke HELP as a
subsystem. You will see the first screen of Help, called HELPMENU. It lists the choices
available to you so that you can review the operation of Help and get a brief overview of
the changes found in the MPE/iX operating system.
Once you are in the Help Subsystem, you display information by entering the name of the
command, UDC, error message, variable, expression, function or other item that you want
at the greater-than (>) prompt. For example:
:HELP
>FINFO
Syntax: FINFO(filename, option)
Defn: A CI evaluator function that returns information about
the specified file.
Type: String, integer, or Boolean depending upon option.
Example: FINFO('x.pub',"EXISTS")
Result: TRUE
Example: FINFO('jeff',"eof")
Result: 71495
The following table summarizes the options of the FINFO function.
The description includes the option number, one or more aliases,
the data type, and a brief description of the option.
Num Alias Data Type Option Description
- - -
0 EXIST Boolean Existence of file
1 FILENAME ONLY String File name
(24/225) Continue?
To display information up to the next keyword or command, press Return. HELP provides a
page break for every 23 lines of output and pressing
Return allows you to continue.
