Re: [clreq] Handling long annotations over adjacent characters in Chinese (#124)

I'm still curious about this. The following picture suggests that tracking has been evenly applied to the first two lines sufficient to accommodate the longer pinyin sylllables (i guess up to 5 characters per hanzi), and maintain the grid layout.

![Screenshot 2020-02-17 at 17 41 34](https://user-images.githubusercontent.com/4839211/74677493-5d527380-51b0-11ea-972d-28144fffaafa.png)

Is this a common approach?  (@r12a wishes he could go out and find chinese publications easily and scan typical examples...)

This is quite a different approach from that commonly used for Japanese, which tends to stretch things as and when needed. 

I was wondering how to achieve that in CSS. It seemed that you'd want to apply `letter-spacing:.25em` to the paragraph, and then set `letter-spacing:normal` for the `rt` elements. Does that sound sensible??

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