@luppano @donieosullivan @scottgal You're right, but only certain columns can be pinned. Like, if you click on a hashtag like #news, or the Local or Federated timelines, those give you the option to pin. But profiles or conversations don't.
There are some rough edges to the interface.
@donieosullivan
in web settings | appearance there is a setting 'Enable advanced web interface'.
that will give you something close to tweetdeck's multi-columns
@donieosullivan Yes! Mastodon's own web client has an Advanced Interface.
Preferences > Appearance > Advanced Web Interface
@donieosullivan click "use advanced interface" in Mastodon's web settings
You can also try https://nicolasconstant.github.io/sengi/
But both are far behind Tweetdeck functionality-wise
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