Key points are not available for this paper at this time.
In designing a language for computer assisted production of animated film sequences, a serious attempt has been made to avoid dependence upon the user's knowledge of mathematics, geometry, and programming logic. Such a user can be expected to have the sense and sensitivity of an artist in manipulating given geometric figures, so our first objective is to provide a general way to construct a wide variety of figures and then to provide manipulative functions for their spatial and temporal evolution. While the mathematical and logical program necessary to perform this processing may be complex, the language seen by the user must afford control over all the technical flexibility available in the program, but from the user's non-technical standpoint.
Citron et al. (Mon,) studied this question.