Document how to download files that don't fit in RAM from the web
Actually, since Tor Browser confinement with AppArmor, it’s not possible anymore to download directly to another device and if there’s not enough space in the RAM to be able to download a Tails ISO from a running Tails DVD or USB/SD without persistence (e.g. less than 2GB of RAM) then you’re stuck.
We should document this limitation on https://tails.boum.org/doc/anonymous_internet/Tor_Browser/.
Feature Branch: bitingbird:doc/DownloadBrowserLimit