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Re:Elevator.js – A “back to top” button that behaves like a ... by evilduck on Wednesday June 24, 2020 @09:26AM (#23627583)
macOS has a lot of baked in emacs keybindings that work almost universally in text fields.

Control-A: Move to the beginning of the line or paragraph.

Control-E: Move to the end of a line or paragraph.

Control-F: Move one character forward.

Control-B: Move one character backward.

Control-L: Center the cursor or selection in the visible area.

Control-P: Move up one line.

Control-N: Move down one line.

Control-O: Insert a new line after the insertion point.

Control-T: Swap the character behind the insertion point with the character in front of the insertion point.

Re:Elevator.js – A “back to top” button that behaves like a ... by jen20 on Wednesday June 24, 2020 @11:07AM (#23628686)
"Almost universally" even includes Electron apps, surprisingly!