Quote - No there is no multi select.

One of the fundamental requirements with Poser 8 is to maintain backward compatibility with everything that has gone before. In particular, this applies to all Python scripts.

There is a big difference in the data model between having a "current actor" or "current figure" versus having potentially dozens of "current actors", potentially not on the same figure. This would break everything.

It's quite a bit of serious work re-writing the data model to accomodate multi-select.

I'd have to disagree, the data model could be extended with new methods.
The old methods would just need to return the first item in a multiple selection to be compatible with the old behaviour.

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One important bit of info no one else has asked for is which versions of Python and wxWidgets are in P8.