In Accpac, to clear out a vendor who had a cr. & dr. & now owes zero I would write a zero amount cheque. How do I clear this vendor in Adagio?

Same way.

Thanks for your answer. I did try that and Adagio said "nothing to print" and would not print the cheque. It actually put that cheque into a error batch.

There is nothing to print here. You need to un-select the 'Print Check' option for this manual check entry.

Thanks, that did the trick.