This shortcut is used by 223 programs in our database.
There isn't any generic description for this shortcut.
What this shortcut does in different programs?
All programs using this shortcut, by category.
Atom (Windows) - If you select a word, and then hit the key combo for this command, Atom will select the next same word for you. Then you can either type directly (which will replace the old words) or use left or right arrow to append things.