The lower portion of the definition, bounded by document ... end, is used by the GDB command interpreter to display help text associated with the cls command when you type help cls.
此定义的下半部分(在 document ... end 所界定的范围内)由 GDB 命令解释器使用,用于在您键入 help cls 时显示与 cls 命令关联的文本。
3
In our model, report data definition language and report format description language are used with interpreters to interpreter them.