Printing dispatch labels

The dispatch label printing system has been extended such that dispatch
labels can all be printed in one go – like the recent extension to the
goods-in label printing system. From a user perspective this is initiated
by not selecting a line when printing labels – i.e. no selection implies all
lines. Note that labels are only printed if they meet these constraints:
1. The labels haven’t been printed already for a line – use Audit tab in a
dispatch line editor to see what’s been printed previously. 2. The part
being dispatched has the usual dispatch labels option set in the material