旨在促进Prolog文本和数据在各种数据处理系统中的适用性和可移植性。指定:Prolog文本的表示形式；Prolog语言的语法和约束；解释序言文本的语义规则；Prolog要处理的输入数据的表示；Prolog产生的输出的表示，以及对符合要求的Prolog处理器施加的限制和限制。

Designed to promote the applicability and portability of Prolog text and data among a variety of data processing systems. Specifies: the representation of Prolog text; the syntax and constraints of the Prolog language; the semantic rules for interpreting Prolog text; the representation of input data to be processed by Prolog; the representation of output produced by Prolog and the restrictions and limits imposed on a conforming Prolog processor.