Quadding rules for CJK languages are very different than those used for European languages. Most documents are left-justified, and text is often displayed in a column-like format.

If the desired final output is column displays of full-width characters, with lines aligning as though there were an even number of half-width characters on a line, use these steps to pack text lines as full as possible:

This technique can also be used to ensure continuous scoring (underlines) when CJK text is underscored.