XWindow系统又称X11，是运行于类Unix框架基础上的图形视窗系统。

The X Window System, also known as X11, is a graphical windowing system used on Unix-like systems, according to iDefense.

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表示目前内容是否包含视窗框架。

Represents whether the current context contains a window frame.

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文件视窗不再受限于整合式开发环境(IDE)的编辑框架。

Document Windows are no longer constrained to the editing frame of the integrated development environment (IDE).

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文件视窗不再受限于整合式开发环境(IDE)的编辑框架。

Document Windows are no longer constrained to the editing frame of the integrated development environment (IDE).

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