Recently we got some Sophos Cloud Switch units (CS101 and CS110 series), we mostly manage them using the web panel or the CLI, which is extensively documented, but the docs only provide command reference and not a more complete user manual. I'm going to list some mundane operations you can take a quick look at without having to dig the inscrutable Sophos documentation (article is still WIP!)
Showing the running configuration
show current running-config
It is still not a helpful export since it also lists the defaults, in fact, it gives you an unreasonably long wall of text which is completely unusable for getting a glance of the configuration. I still haven't figured a way to get a more terse output.
Saving the running configuration
save
Yep, just "save".
I'm still trying to guess who is the ODM for this platform. It looks like the software is the exact same one as the one used in SonicWall switches.