CmdrTaco from the stuff-to-hack-on dept.
jjrff writes "The Enlightenment
project has turned up some really cool bits lately. here is a nifty article about using their Epeg bits to easily deal with thumbnailing. Note that they also have a great deal of sample code for things like canvasing and even dealing with network delivery."
In any formula, constants (especially those obtained from handbooks)
are to be treated as variables.