FLIF

Very good point.

Well if we do metadata as in https://github.com/jonsneyers/FLIF/issues/17 then we can just as well add tiles by allowing the container to contain multiple bare FLIF files (and metadata that gives...

Probably better to have one overall FLIF file with limited resolution, and then tiles with more detail. It would be somewhat redundant, but much more efficient to render.

I completely agree.