> E.g. The description of an item in a sales invoice is the description at the time the contract of sale is made, and must be immortalised as such as a copy of

> E.g. The description of an item in a sales invoice is the description at the time the contract of sale is made, and must be immortalised as such as a copy of that description. +1. I maintain a couple of systems that younger-me wrote 15+ years ago. If younger-me had understood this, I could have avoided much re-engineering :)