HELP_TEXT

 Invokes the VMS HELP utility.  You specify the help library that will be
 used for help information, the initial library topic, the prompting mode
 for the HELP utility, and the buffer for writing the help information.

 Syntax

    HELP_TEXT (string1, string2, keyword, buffer)

 Parameters

    string1    The name of the help library to use.  Put the string in
               quotes.  If you specify only a filename, the HELP utility
               looks for a file in SYS$HELP with the file type .HLB.

    string2    The initial library topic.

    keyword    Specifies whether the prompting mode for the library is ON
               or OFF.

    buffer     The buffer for writing the information.

 Example

    HELP_TEXT ("tpuhelp", (READ_LINE("Topic:  ")), OFF, help_buffer)

 Prompts the user to type a help topic.  The HELP utility uses the library
 called SYS$HELP:TPUHELP.HLB.  The information is written to the help
 buffer.