frame:setup-size-pref in Framework Functions

• (frame:setup-size-pref size-pref-sym width height) -> void
     size-pref-sym : symbol?
     width : number?
     height : number?

  Initializes a preference for the frame:size-pref mixin.

  The first argument should be the preferences symbol, and the second an third should be the default width and height, respectively.