Portable Scheme Debugger

from The Free On-line Dictionary of Computing (8 July 2008)
Portable Scheme Debugger

   (PSD) A package for source code debugging of {R4RS}-compliant
   {Scheme} under {GNU Emacs} by Kellom ?ki Pertti
   <[email protected]>.  Version 1.1.  Distributed under {GNU} {GPL}.
   It works with {scm}, {Elk} and {Scheme->C}.

   (ftp://ftp.cs.tut.fi/pub/src/languages/schemes/psd.tar.Z).

   (1992-10-08)
    

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