Chinese and Japanese can be laid out vertically. In the horizontal case, text is read from left to right, top to bottom. For the vertical case, the text is read top to bottom, right to left. Indentation from the left edge in the left-to-right horizontal case translates to indentation from the top edge in the top-to-bottom vertical case.
Here is example of W3C webpage:
http://www.w3.org/TR/css3-writing-modes/#propdef-writing-mode
I would like to enable the “writing-mode” in style class of editor.
Such as
writing-mode: vertical-rl,
writing-mode: horizontal-tb;
vertical-align: text-top;
color: blue;
Please instruct how to enable additional style class.