Alternative Test set reflection sorting routines

Tue Nov 19 18:14:51 EST 1996

I was curious if anyone in the X-PLOR community has experimented with
free-R test sets composed of reflections in thin resolution shells. I'm
interested in refining under NCS restraints, and I want to use free R
validation. Using a thin shell of test reflections should put all NCS
related reflections in one set or the other. Can this be conveniently
done in X-PLOR (or by any other compatible means) ?
 Thanks in advance for feedback.

Tom Colby
University of Rochester Biophysics Dept.
e-mail: colby at

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