The Free On-line Dictionary of Computing (30 December 2018):

POPART

   A grammar-driven programming environment generator.  Uses
   Paddle.

   ["POPART: Producer of Paddles and Related Tools, System
   Builders' Manual", D.S. Wile TR RR-82-21, ISI, Marina del Rey,
   CA 1982].

   (1994-11-30)