The /FLAG qualifier lets you specify  whether  the  compiler  informs  you
   about declining features.

   The format of the /FLAG qualifier is as follows:

      /[NO]FLAG[=[NO]DECLINING]

   The /NOFLAG qualifier suppresses  any  warning  messages  about  declining
   features.

   /FLAG is the same as /FLAG = NODECLINING.

   The default is /NOFLAG.