Q: json

[kalle07]

iv made a quick online test on your
https://www.datalab.to/playground/documents/new

so yes its most times layoot conform! ;)
for tables i have a question ... you say json ... but inside json part all is html, so no realy use for further embedding tasks.
only table in json is readable by embedder.

[kalle07]

i take all back!
if i use local and instruct: Please use JSON format for tables including all headers and cells in context to each other.
Assign the respective cells to each header.

all is fine ;)