The Grail Language and Operations
RAND CORP SANTA MONICA CA
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The important organizational concepts of the flowchart language are the sequential flow of control, the hierarchy of subroutines, and the language flow diagrams that pictorially relates their interdependence. A fundamental facility of the man-machine interface is the automatic recognition of appropriate symbols, which allows the man to print or draw appropriate symbols freehand. GRAILs text-editing features include placement, replacement, and deletion of characters, character-string insertion of deletion, and line deletion. Control functions include displaying text page-by-page, requesting specified display frames, moving symbols, and text line editing. The flowchart processes may be compiled and executed at CPU speeds or the man may control interpretative execution by direct stylus actions. He may use overlay displays or split screen displays to debug. This is the second part of a final report on GRAIL.
- Computer Programming and Software
- Computer Hardware