/[NO]APPEND

   This qualifier controls whether a new log file is created or whether
   an existing log file is appended to. The logical WATCHER$APPEND
   specifies the default value for a PEEK, SPY or WATCH command.

   Example:

         $ PEEK JONES /OUTPUT_LOG=JONES.LOG /APPEND
     or
         $ DEFINE WATCHER$APPEND TRUE
         $ PEEK JONES /OUTPUT_LOG=JONES.LOG

   In this example, a process named JONES will be watched, and a log
   file called JONES.LOG will be created if nonexistent, or appended
   to if already extant.