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Sun Jan 3 23:30:59 CET 2010

Display data structure (implementing environments)

See 4.4. in ``Dybvig's Three Implementation Models for Scheme''[1]:

  A display is an array of display pointers, each holding the address
  of one frame in the current static chain.  

This avoids frame traversal.

[1] http://www.cs.unm.edu/~williams/cs491/three-imp.pdf



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