The GRAIL Language and Operations
The GRAIL Language and Operations
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GRAIL 语言和操作
DOI：
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发表时间：
1969
期刊：
影响因子：
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通讯作者：
W. L. Sibley
中科院分区：
文献类型：
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作者：
T. O. Ellis;J. Heafner;W. L. Sibley
摘要：流程图语言的重要组织概念是控制的顺序流、子程序的层次结构以及将它们的相互依赖性形象地联系起来的语言（流程图）。人机接口的一个基本功能是自动识别适当的符号，它允许人徒手打印或绘制适当的符号。GRAIL的文本编辑功能包括字符的放置、替换和删除，字符串插入或删除，以及行删除。控制功能包括逐页显示文本、请求指定的显示框架、移动符号和文本行编辑。流程图过程可以以CPU速度编译和执行，或者人可以通过直接的触笔动作来控制解释性执行。他可以使用重叠显示或分屏显示来调试。这是关于GRAIL的最终报告的第二部分。
Abstract : 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. GRAIL's 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.