发明授权
US5123086A Method and system of hierarchical assistance 失效
分级协助的方法和制度

Method and system of hierarchical assistance
摘要:
The system providing a guidance for the command entry to an interactive computer recognizes the hierarchical rank of productions and displays command explanatory messages below the rank of production to which the command in need of explanation belongs. Displaying commands of one or two ranks relieves the operator from the annoyance of useless display reading.
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