I'd love to have documentation for this kind of frameworks available in a downloadable PDF. I know it is probably often updated, but so can a PDF be. The reason

I'd love to have documentation for this kind of frameworks available in a downloadable PDF. I know it is probably often updated, but so can a PDF be. The reason for me wanting this, is that I usually get into the proper focus on places without a good internet connection, like when I'm travelling (airports, flights, trains, etc).