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We use Micrographx FlowCharter, which allows you to export flow charts
to many different graphic formats. We paid $99 for an upgrade from the
previous version (ABC FlowCharter 6). I haven't used Visio, and in fact
I've barely used FlowCharter, so I can't compare the two, but
FlowCharter seems pretty easy. If you have any questions I can ask
someone in the office who actually has a clue. ;-)