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get-aligned-min-width
get-aligned-min-height
stretchable-width
stretchable-height

Must be implemented by any snip class whose objects will be stretchable when inserted into an aligned-pasteboard<%> within a snip-wrapper%.

(send a-stretchable-snip get-aligned-min-width)
  (and/c real? (not/c negative?))
The minimum width that the snip can be resized to.

(send a-stretchable-snip get-aligned-min-height)
  (and/c real? (not/c negative?))
The minimum height that the snip can be resized to.

(send a-stretchable-snip stretchable-width)  boolean?
(send a-stretchable-snip stretchable-width stretch?)  void?
  stretch? : boolean?
Gets/sets whether or not the snip can be stretched in the X dimension.

(send a-stretchable-snip stretchable-height)  boolean?
(send a-stretchable-snip stretchable-height stretch?)  void?
  stretch? : boolean?
Gets/sets whether or not the snip can be stretched in the Y dimension.