187
Obscure button tier list
(sh.itjust.works)
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ins switches between inserting and replacing text, very useful.
I personally never find myself needed that, I just selected and overwrite instead.
For when the text you want to replace is exactly as long as the text you want to replace it with? Wouldn't you have to toggle it mid typing otherwise? Seems more useful to just shift+ctrl+right arrow and then type.
I find inserting text to be extremely confusing.