Spare parameter to umv ignored without warning
OPTICS [156]: umv(s6f,-34,9229)
Moving s6f from -34.5908 to -34
s6f
-34.000
OPTICS [157]: umv(s6f,-34.9229)
Moving s6f from -34 to -34.9229
s6f
-34.923
Silently ignoring the 9229 is surprising. "." and "," are next to each other on the keyboard and hard to see with bifocal glasses.