Example

 $ SET VERIFY
 $ @TEST
 $ SET DEFAULT SYS$LOGIN
 $ SHOW DEFAULT
   USER$:[JENSEN]
 $ SET PREFIX "(!5%T) "
 $ @TEST
 (17:52) $ SET DEFAULT SYS$LOGIN
 (17:52) $ SHOW DEFAULT
   USER$:[JENSEN]

     This example demonstrates the difference between having and
     not having a prefix for verification. The first command turns
     on verification. (Verification must be turned on to see the
     prefix.) The second command invokes a test procedure to show
     what the output looks like without a prefix. The third and
     fourth lines reflect the contents of the test procedure invoked
     in the preceding command. The third command sets the prefix to
     an FAO control string so that the first five characters of the
     standard time will be shown for each command. The last command
     invokes the test procedure again to demonstrate what the output
     looks like with a prefix.