Transfers control to a labeled subroutine within a command procedure.
The CALL command creates a new procedure level as does the @ (execute
procedure) command.  The SUBROUTINE and ENDSUBROUTINE commands define
the beginning and ending of the subroutine.  The SUBROUTINE command
must be the first executable statement in a subroutine.

Format
 CALL label [p1[p2[... p8]]]

Additional information available:

ParametersQualifier

label
 Specifies a 1- through 255-alphanumeric character label appearing as
 the first item on a command line.  A label may not contain embedded
 blanks.  When the  CALL command is executed, control passes to the
 command following the specified label.  The label can precede or
 follow the CALL statement in the current command procedure.  When you
 use a label in a command procedure, it must be terminated with a colon.
 All labels are procedure level dependent except for those labels that
 define subroutine entry points.  These labels are local to the current
 command procedure file level.  Subroutine entry points labels must be
 unique.
p1 [p2 [... p8]]
 Specifies from one to eight optional parameters to pass to the command
 procedure.  The parameters assign character string values to the symbols
 named P1, P2, and so on in the order of entry, to a maximum of eight.
 The symbols are local to the specified command procedure.

Additional information available:

/OUTPUT

 Requests that all output directed to the logical device SYS$OUTPUT be
 written to the file or device specified.  System responses and error
 messages are written to SYS$COMMAND as well as to the specified file.
 If you specify /OUTPUT, the qualifier must immediately follow the CALL
 command.  No wildcard characters are allowed in the output file
 specification.