Discontinuities in angle driving

From: <PODOSNNA%NYUACF1.BITNET(-(at)-)OHSTVMA.ACS.OHIO-STATE.EDU>
Subject: Discontinuities in angle driving
Date: Sat, 16 Jan 93 22:43 EDT

 Dear Netters,
         Does anyone know anything about the discontinuities in
 angle driving routines in mm2/mm3? Could you please send a reference if
 this phenomenon was described before.
         Sincerely,
 Andrew Podosenin
 PODOSNNA(-(at)-)ACFCLUSTER.NYU.EDU