Marking parameters for animation

The present invention advantageously provides for a method and system that is operable on a computer system, for selectively determining parameters values or keys to be made available to graphical imaging system to drive a animation application. The method includes receiving a Parameter Set (PSet) having a plurality of parameters corresponding to the animation application, assigning one or more of said parameters a value; marking a subset of said parameters, modifying the keys of only marked parameters according to the parameter's value, and running the animation application in response to the keys after marking.