The “Alt + F3” key combination in Sublime Text is used to select all occurrences of the currently selected word or text string in the file.
For example, if you have a word selected in your file and you press “Alt + F3”, Sublime Text will select all occurrences of that word in the file. This is useful if you want to edit or replace multiple instances of the same word or string in your file.
It is important to note that this functionality only applies to the current selection. If you have nothing selected, Sublime Text will not perform any action when you press “Alt + F3”.
