ANSI X3的修订、重新设计和合并。37-1995，ANSI X3。37/AM 1-1998， ANSI X3。37-1995/AM 2-1998。本标准规定了用自动编程工具（APT）语言表示的程序和系统中性CLL文件（SCL）的格式和解释，该文件可由处理器（如APT）或图形系统生成。目的是促进这些输入语言程序在各种计算机上的可移植性。此外，SCL允许通用性和可移植性，无论生产它的来源是什么，都适用于各种各样的制造设备。 APT是一种类似英语的语言，用于描述数控机床的操作。APT语言输入程序由计算机处理器转换，随后可能由后处理器转换为 数控机床的一组有序指令。

Revision, redesignation, and consolidation of ANSI X3.37-1995, ANSI X3.37/AM 1-1998, ANSI X3.37-1995/AM 2-1998. This standard establishes the form for and the interpretation of programs expressed in the Automatically Programmed Tools (APT) language and of the System-Neutral CLFILE (SCL), which can be generated by processors, such as APT, or by graphical systems. The purpose is to promote portability of these input language programs to a wide variety of computers. In addition, the SCL permits commonality and portability, regardless of the source that produces it, to a wide variety of manufacturing equipment. APT is an English-like language for describing operations for numerically controlled machines. An APT language input program is converted by a computer processor and, probably, subsequently by a postprocessor into an ordered set of instructions for numerically controlled machines.