Show better mappings between base and annotation in figures

[r12a]

10.2.39 tts:rubyPosition
http://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-rubyPosition
Example Fragment – Ruby Position

The example sets a bad example imho by combining two base characters with two annotations. Content authors ought to properly associate base characters with the annotations that are specific to them, and i think the example should do the same.

[r12a]

A particularly problematic instance of this, for me, is the example of complex ruby at http://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-ruby-example-2

What makes complex ruby complex is not just that ruby text appears on both sides, but that there are multiple mappings between base an annotation. I believe that the example should show that とう maps to 東 and なん maps to 南, while たつみ maps to 東南. This is the correct semantic mapping for those items. Again, i think that lumping とうなん sets a bad example for content authors.

(Note, btw, that lumping several annotations with several base characters in this way can cause wrapping issues in simple ruby, since it creates group ruby.)

[cconcolato]

There are 2 comments in this issue:

• one about http://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-rubyPosition
• one about http://w3c.github.io/ttml2/spec/ttml2.html#style-attribute-ruby-example-2

#246 is about the second example and will be addressed there.
The above PR fixes the problem of the first example and should close this issue.

[cconcolato]

@r12a Can you confirm that you are satisfied with the response and approve the PR?

[r12a]

The i18n WG has closed its tracker for this issue.