Packslip - Print a packing slip before shipping

Sometime you need to be able to print the packing slip before an order is marked as shipped or invoiced.

Do you try to print packing slips, but get a result as the following message - "There are no printable documents related to selected orders"?

Then an option to print a packing slip need to be available for orders prior to shipping or invoicing.

Finally, you have ability to do this easily with "Packslip" extension: