建立使用单个字符输入或模块（或两者）编写的程序的语法；解释使用单个字符输入或模块或两者的基本程序含义的语义规则；要检测的错误和异常情况，以及处理此类错误和异常情况的方式。

Establishes the syntax of programs written using individual character input, or modules, or both; the semantic rules for interpreting the meaning of a BASIC program that uses individual character input, or modules, or both; errors and exceptional circumstances to be detected and also the manner in which such errors and exceptional circumstances are to be handled.