'''Net Total:''' to show the net total after tax.
'''Description:''' this is called document description...will remember from most recently keyed in description.
'''Outstanding:''' the outstanding amount of this Invoice. This value will change accordingly if payment/partial payment is made.
'''Proceed with new A/R Invoice''': when this is checked, a fresh screen will be ready for new entries upon Save; if unchecked will exit the transaction screen upon Save.