It simply replaced the former triple dot button with something more descriptive and, being blue rather than pale grey, more visible.
It's applicable to Groups.io as a whole.? It was also discussed to the beta group, where a great many "features in flux," or new features get discussed.
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Brian?-?Windows 10 Pro, 64-Bit, Version 1809, Build 17763??
? ? ?Those who cannot remember the past are condemned to repeat it.
? ? ? ? ? ? ? ?~ George Santayana