[INVOICEDATE] - invoice date
[INVOICEDATES] - invoice date invoice number if invoicees are involved
[INVOICEDATE:+1day{%A, %e %B, %Y}] - optional date offset and display format. The offset can be any plus or minus any number of days and the display can be any valid PHP strftime format string.
[INVOICEDATES+1day{%A, %e %B, %Y}] - optional date offset and display format - invoice date invoice number if invoicees are involved, The offset can be any plus or minus any number of days and the display can be any valid PHP strftime format string.
=== Invoice Values ===
These template variables will display a value form the invoice.