Displays on the current  default  output  stream  device  (SYS$OUTPUT)
 information on EXCHANGE commands and qualifiers.

 Format
         EXCHANGE>  HELP   [command-verb [qualifier [option [option]]]]

 Prompts
         None.

Additional information available:

ParametersDescriptionExamples

 command-verb

      Specifies the name of the EXCHANGE verb about  which  information
      is  desired.   Omitting  the  command  verb  will display general
      information listing all commands recognized by EXCHANGE.

 qualifier

      Gives the name of the qualifier to be explained.

      Information is located in a hierarchical manner, depending on the
      level  of  information  required.   The  lowest  level of help is
      obtained by entering  HELP  without  any  arguments.   HELP  will
      display a list summarizing the available first level information,
      the names of the EXCHANGE commands.

      The first level of help is  the  command  description.   Entering
      HELP  followed  by  the  name  of  an  EXCHANGE command verb will
      display  a  description  of  the  command,  followed  by  a  list
      summarizing the help available at the next level.

      The second level  of  help  is  for  command  qualifiers.   Enter
      HELP verb qualifier   for   this   level  of  help,  for  example
      HELP COPY /CONTIGUOUS.

      Deeper levels of help continue in this fashion,  giving  help  on
      options to qualifiers and other information.

      If you specify an asterisk (*) in place of any keyword, the  HELP
      command displays all information available at that level.

      If you specify an ellipsis (...) after any  keyword,  you  obtain
      everything in the help file for deeper levels.

      You can specify percent signs (%) and asterisks () in the keyword
      as wild card characters.

      1.  EXCHANGE>  HELP

          This command explains the HELP command, and lists a table  of
          EXCHANGE commands for which more help is available.

      2.  EXCHANGE>  HELP  COPY  /VOLUME...

          This command displays all the help which is available for the
          COPY /VOLUME_FORMAT qualifier, including descriptions of each
          of the options.