A separation agreement is a formal agreement between husband and wife. A separation agreement usually contains, among others, the following provisions:
" If there are children, how much child support is to be paid and the terms of payment.
" A visitation schedule.
" How much alimony (if any) is to be paid.
" Responsibility for the joint bills.
" Who will remain in the marital residence and who will pay for its upkeep.
" How to split any tax refund and tax deductions.