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CIF Cell Name Extensions

Cell names were not part of the original CIF syntax specification. Various extensions have been used to supply cell names in a CIF file. Each of these extensions consists of command following the ``DS ...;'' command, in the following forms:

cname_index Historic Name Format
0 IGS 9 cell_name;
1 Stanford/NCA (cell_name);
2 Icarus (9 cell_name);
3 Sif (Name: cell_name);
4 none no extension used

In Xic, any of the first four forms (indices 0-3) will be recognized equivalently when reading CIF input.



Stephen R. Whiteley 2006-10-23