If the character completes a function, the editor enables subroutine folding to minimize the text space.

如果该字符完成了一个函数，编辑器允许函数折叠以最小化文本空间。

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Imagine tapping out text messages on a device the size of an index card and as flat as a piece of paper, then folding it in thirds to hold it to your ear and make a phone call.

设想一下以下的情景： 你在一台小如名片、薄如纸张的手机上发完短消息后，把它三折后放入耳边又能打起电话。

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