agenda+ Changes to vertical text article

This update:

- rewrites the section "The sideways value of text-orientation"
- updates many of the results to reflect progress in browser implementations
- brings all the 'try it yourself' pages into the document itself and 
applies the latest template and approaches
- various other edits

Please take a read and let me know by Thursday, if possible, whether 
anything needs to be changed before republishing.


Received on Tuesday, 2 August 2022 09:48:09 UTC