Yep they sure can, Mach has a VAR monitor(;-) Look under the operator pulldown, at the bottom shoulod be the VAR monitor when it pops up type in the var you want to see AND DO NOT PRESS ENTER(;-)
then hit update and you will see the values displayed, the monitor is active meaning it updates itself, you can move it over to the side if needed. OK closes it out again.
(;-) TP