Graphic Edit Functions Available on Microcomputers

A graphic edit system on microcomputer is presented in this paper, which is coded in FORTRAN 77. and runs on an IBM-PC microcomputer. The good points of the system are: powerful edit ability, being convenient to use and good transportability All of the functions of the system are designed in screen menu items for user to select. The action of each nenu item is introduced. The data structure, line clipping algorithm and some application examples are also described.