C Copyright 1995, Columbia University, all rights reserved.
C Permission is granted to utilize and disseminate this code or
C  document without charge, provided that (1) this copyright notice is 
C  not removed, and (2) all changes made by other than members of the 
C  MacroModel Development Group at Columbia University are, if further 
C  disseminated, (a) noted as such; for example, by means of source-code 
C  comment lines, and (b) communicated back to the author for possible 
C  inclusion in subsequent versions.