The bill that is sent to the customer is generated based on the tmp_billemail.txtfile. If you wish, you can have a different template for each record in the billing table by entering a different template name in the billtemplate field.
The template can reference any field in the projects table by enclosing the field name to be included in square brackets.
Sample Bill Template
Dear [customer]
Payment is now due for:[billdescription]
Billing Reference:[description]
Payment can be made by going to http://www.vpcart.com/vpasp/shopprojectlogin.asp
Your Name: [customer]
Email: [customeremail]