On the 'Regular Orders' page you can check boxes for orders you wish to include and then there is a link to 'Print Shipping Labels' at the top.
Also agree, surely it should be a very simple addition. It would also be good if there was a way to more easily bulk enter tracking numbers rather than have to access each order individually.
Oh and out of stock feature is extremely important. We are often overselling items.
I agree with this but can you even still do this basic level of inventory tracking? I couldn't see it under Product Optional Values.