meshfromstl m [locate_data_file b.stl]
meshtext m
vsetdispmode m 33
vrotate 0.3 0 0
vdump $::imagedir/${::casename}_txt.png
meshvectors m -mode elem -maxlen 10 -color green -arrowpart 0.5 -issipmle 0
vsetdispmode m 5
vdump $::imagedir/${::casename}_vct1.png
meshvectors m -mode nodal -maxlen 20 -color white -issimple 1
vfit
vdump $::imagedir/${::casename}_vct2.png