[INVOICEPARTBALANCENUM:status1,status2,status4:10%] - As per INVOICEPARTBALANCE but the value is displayed with a decimal point and no thousands separator (for calculation).
[INVOICEBALANCE1] - invoice balance of one booking only, not the booking group
[INVOICEBALANCE1NUM] - As per [INVOICEBALANCE1] but the value is displayed with a decimal point and no thousands separator (for calculation).
[INVOICECHARGES] - invoice sum of all charges