No not the vinyl kind and not the police kind, a record of your special perfect stains and finishes. It takes an awful lot of work to get just the right color in the stain for the project so rather than waste the time it took to get it just right, record your process in detail the same for the mix you used for the "clear coat". By teaspoons full or cc's or whatever units you are comfortable with have a simple notebook with the project maybe a picture of it and the finish formula. If you or a client ever needs repair, it will definitely help.
http://www.woodweb.com/knowledge_base/A ... orant.html