Graphical systems and two-dimensional mathematical expressions
James E. George · 1972
The additional facilities needed to generate two-dimensional mathematical expression displays and their implications to a graphical language system are discussed and result in a linguistic based graphical system. An elementary mathematical expression display system is used to motivate and illustrate these additional facilities and is defined utilizing a linguistic based graphical meta system. The use of the elementary system is illustrated for the evaluation of expressions, the display of expressions on different display devices and the use of the entire elementary system by a text formatting program to produce linear and two-dimensional text.