extraction times, which is an incorrect units conversion of the
"step" parameter in the extract section. It was converting based
on the "lambda" parameter in the same section, which has to do with
the scaling of values in the output file, not the scale factor of
the database to be extracted, which is set by the current CIF output
scale. Once fixed, extraction times are minimized using the rule of
thumb mentioned in the techfile reference, which is 50 times the
minimum feature size. Also: Give the lengthy nature of extraction
on large designs no matter how well optimized, added a feature to
mark the progress of the extraction in increments of 5%. Does not
output progress for small cells that extract quickly.
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