Argument

 

message-string

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor

   Message string written to the current controlling output device
   by LIB$PUT_OUTPUT. The message-string argument is the address
   of a descriptor pointing to this message string. RMS handles all
   formatting, so the message does not need to include such ASCII
   formatting instructions as carriage return (CR).