The purchase receipt labels option produces labels you can use to identify your stock.
The vendor address labels option produces address labels for a range of vendors. These labels can be used for mailshots.
Select the receipt or vendors required, then the number of labels per item, then the start label position. Press the add button to add labels to your list, then when you've added all the labels, press the create button:
The labels can be printed on 8 or 14 labels per A4 sheet.
A PDF of the labels will be created by Herschel. This should be printed out actual size: