User-agent:
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0
According to https://zim-wiki.org/manual/FAQ.html, it is not necessary
to include the hidden .zim folder when backing up notebooks or syncing
notebooks across machines. But is it safe to include this folder anyway,
or will it break things? In my case I am syncing a notebook between
multiple computers using Nextcloud.