Ted? Suppose you think ken, I will answer as follows: an employment contract to write a script (in your case an adaptation), although a work made for a lease does not exclude other negotiated points. But I don`t know what you mean by royalties. This is typically what we call in showbiz “Residuen”, which are collected and paid by the WGA. If you`re asking if your full payment should be the last money you`ll receive, you can also negotiate a deferral (if you haven`t received your rate) or conditional compensation (often referred to as “profit sharing”). Any good lawyer can advise you. Over the past twenty years, the business of selling scripts has become much more difficult. As a result, a “trade deal” is widespread. This is perhaps the most biased clause in all agreements.