$ PEEK/SAVE_SCREEN/LOG/REOPEN /SPAN = minutes
                                 /NOSPAN

   Specifies the approximate time period which should elapse before
   a new version of a terminal-logging file should be started, when
   /REOPEN is in effect.

   Use /NOSPAN to specify that any default /SPAN value should
   be ignored.

   The default value for this qualifier is taken from the logical
   name SAVE$SPAN.

   Example: $ PEEK/SAVE_SCREEN/LOG/REOPEN/SPAN=10

   The number of minutes can contain a decimal point. The minimum
   acceptable value is 1 minute.

   For more information, see the PEEK Commands SAVE_SCREEN Subtopic:
   /REOPEN