Parameter

command-specifier

   Specifies the number or the first several characters of the
   command you want to recall. You cannot use any of the qualifiers
   in conjunction with a command-specifier.

   The specified characters should be unique. If they are not
   unique, the RECALL command displays the most recently entered
   command line that matches those characters. For example, suppose
   you enter a SHOW STATUS command and later enter a SHOW TIME
   command. If you then type RECALL S, the SHOW TIME command is
   recalled. You must type RECALL SHOW S to recall the SHOW STATUS
   command. The number of the command can be from 1 to 254 (where 1
   is the last command entered).

   The RECALL command itself is never assigned a number. If no
   command specifier is entered, the RECALL command recalls the most
   recently entered command. You can use the /ALL qualifier to have
   the system display all the commands in the recall buffer, along
   with their command numbers, to verify the number of the command
   you want to recall.