One frustrating issue that I encounter every time I setup an OSX machine for development is that the very useful Ctrl+Maj+Down (and Ctrl+Maj+Up) keybinding to select multiple lines in Atom or Sublime Text doesn’t work out of the box.
This is because OSX already uses this shortcut for its Mission Control app.
- Go to Settings > Keyboard > Shortcuts > Mission Control ;
- Unselect the shortcuts (or bind another keystroke if you need the functions). Ctrl is the little ^ icon.
- And there you go, open up Atom or Sublime Text and it should be working.
tomsihap 