Last summer Mark added links in the files sections, with type of Google Drive/Docs, Dropbox, Box, or Microsoft Onedrive. Each link type has a nice icon to go with it representive of the service.
One group I’m in is doing quite a bit of file hosting on a different platform: archive.org.
Instead of attempting to add a link type for every service out there, it would be nice to have a generic link type that uses a more generic icon. A search for “external link Icon” brings up some familiar ones with a little square with an arrow pointing out of it. Or you use the chain-link icon used in the groups.io message composer.
Gilbert