Various
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Depends on what they want to "update". If they just want to change
the dimension text, then sure, the operator could select the text entities
and pass the selection-set on to an AutoLISP function that would make the
changes. Anything more than that would get very complex very
quickly…that't the whole purpose behind associative dimensions. Don't
forget to try the margaritas at the Acupulco restaurant. As far as the
Optimouse driver goes, I think Jamie or Steve would be better able to help
you out.