/+  *group-store
|_  upd=update
++  grad  %noun
++  grow
  |%
  ++  noun  upd
  ++  resource
    ?<  ?=(%initial -.upd)
    resource.upd
  ::
  ++  json
    %+  frond:enjs:format  'groupUpdate'
    (update:enjs upd)
  --
++  grab
  |%
  ++  noun  update
  ++  json  update:dejs
  --
--