Makes an indexed sequential mail file smaller.

  When you compress a file, the following four steps occur:

   1  A temporary file named MAIL_nnnn_COMPRESS.TMP is created.
      (nnnn is a unique, four-digit number.)

   2  The contents (of the file to be compressed) are copied to
      the temporary file and compressed.

   3  The original (uncompressed) file is renamed with a file
      type of OLD.

   4  The newly compressed file is renamed from
      MAIL_nnnn_COMPRESS.TMP back to its original name.

   Format:

         COMPRESS [file-spec]

Additional information available:

ParametersQualifiersExamples

 file-spec

   The name of the mail file to be compressed.  If a file-spec is
   not specified, MAIL compresses the mail file that is
   currently open.  If there is no open mail file, MAIL
   compresses the default mail file.

Additional information available:

/OUTPUT

   The name of the compressed file.

  1.

       $ MAIL
       MAIL> COMPRESS
       %MAIL-S-CREATED, DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 created
       %MAIL-S-COPIED, DISK$FUN:[FELLINI]MAIL.MAI;1 copied to DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 (2 records)
       %MAIL-S-RENAMED, DISK$FUN:[FELLINI]MAIL.MAI;1 renamed to DISK$FUN:[FELLINI]MAIL.OLD;2
       %MAIL-S-RENAMED, DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 renamed to DISK$FUN:[FELLINI]MAIL.MAI;1

         This example shows how to compress the contents of your default
         mail file (MAIL.MAI).

  2.

       MAIL> COMPRESS trips.mai
       %MAIL-S-CREATED, DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 created
       %MAIL-S-COPIED, DISK$FUN:[FELLINI]TRIPS.MAI;1 copied to DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 (2 records)
       %MAIL-S-RENAMED, DISK$FUN:[FELLINI]TRIPS.MAI;1 renamed to DISK$FUN:[FELLINI]TRIPS.OLD;2
       %MAIL-S-RENAMED, DISK$FUN:[FELLINI]MAIL_08C8_COMPRESS.TMP;1 renamed to DISK$FUN:[FELLINI]TRIPS.MAI;1

         This example shows how to compress the contents of a file named
         TRIPS.MAI.