你可以创建可见的网格来辅助页面排版：你的页面排版软件有辅助线的功能，或者你可以在非打印层绘制边线或方块。
You can create a visible grid to aid in page layout using the guidelines feature of your page layout software or by drawing lines or boxes that you place on a non-printing layer of your publication.
在一般情况下，字符串转义的功能以及进一步摆脱这些字符，非打印字符，如适用。
In general, string escaping functions escape these characters as well as further, non-printable characters, if applicable.
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