Billit does not have a separate sales slip feature but you can easily create sales slips by changing the layout of a quote, delivery note or order order form.
Create a new corporate style for a quote, delivery note or order form and change the title and name of the layout template to 'Sales slip'.
Add the following text in the gray box at the bottom:
“Received in cash”
“I confirm that the present statement is true and complete.”
When you create a new quote, delivery note or order form you can now choose the layout 'Sales slip' to convert the document into a sales slip. You can later convert the document to a real invoice by selecting it from the list and clicking the orange 'Invoice' button.