Reference Finder is a program that offers the possibility to complete the calculations that are necessary to work out the folds automatically, as well as showing the steps that have to be followed to manage some of the folds.
After program initialization (which takes a few seconds to build the database of folding sequences), you type in a numerical or algebraic expression for the coordinates of a point or a line. ReferenceFinder immediately returns the 5 "best" short folding sequences that approximates that point or line. The approximations are very good, often better than 1 part in 1000, which, in my experience, is about the limit of human folding precision. ReferenceFinder can parse simple algebraic expressions (thanks to a contribution from Carlos Furuti).