[ class-before class-after [ none | default [ [ [ min max ] | '/' alternate ] priority? ]? ] ]+
@text-spacing-rule rule-name [ font-name [ ',' font-name ]* ] {
line-head opening 0%;
closing line-end 50%/0%;
ideograph alphabet 25% 12.5% 50% 2;
}
The relationshipo of expansion opportunities defined here and other properties (text-justify, word-spacing, letter-spacing) is an issue
JIS/JLREQ/InDesign style (trim and specify how much to add), or specify how much to add/remove?
Results differ if punctuation are proportional
Spaces are not consistent for: “]<big>[]</big>[”
Can 'none' have optional min/max/alternate/priority? Does it allow expansion?
How to handle proportional punctuation is still an issue
'/' syntax is used only for closing+line-end, where CSS3 Text defines by the “if it fits” clause