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anytime a "save;flush" maneuver fixes weirdness in magic, it might be
due to an insufficent number of planes and/or types (internal magic
data structures) in your version of magic -- see if the same thing
happens with any *.light* techfiles (which use fewer types).  for more
info, look for

 "save;flush" maneuver

in ftp://ftp.isi.edu/pub/sondeen/magic/new/beta/CHANGELOG

/jeff


Mika Nystrom writes:
 > Hello everyone,
 > 
 > One of our students has noticed a problem with connectivity in
 > Magic 7.1.  When the attached file is loaded into Magic, using
 > SCN6M_SUBM.10 (both 2000d and 2002a versions), the polycontact at
 > (168 396 172 400) appears to be connected to m2 as well as to m1
 > and poly.  The magfile was not generated with magic, but with a
 > library that we use here at Caltech to write cell generators.  The
 > connectivity problem persists even if you delete all rectangles
 > except for the m2 and pc.  Notice that the pc (or the area above
 > the pc) is treated as a tile in the m2 plane...
 > 

not sure what you mean by this.  

 > Rewriting the file with magic and then reading it back seems to
 > solve the problem.  Can anyone offer any suggestions?  Is it illegal
 > to switch between the different types the way we do in this file?
 > 

i believe your mag file is fine, even with unsorted and repeated
layers.

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