Sublime Text’s column mode makes it really easy to create multiple cursors and make repetitive edits. This comes in handy all the time. 

On Mac, Sublime Text’s default key-binding for entering column mode conflicts with the system’s default key bindings for the “slow-mo” version of mission control.

I like mission control. I hate slow mo. Apparently you can’t have one bound to ctrl-up without the other bound to ctrl-shift-up.

Luckily it’s pretty easy to modify the sublime text shortcut from ctrl-shift-up (and down) to ctrl-alt-up (and down).

Just add the following bindings to your user key-bindings:

{ "keys": ["ctrl+alt+up"], "command": "select_lines", "args": {"forward": false} },
{ "keys": ["ctrl+alt+down"], "command": "select_lines", "args": {"forward": true} }

Of course, take care to get the line-ending-commas right if you already have bindings in that file.

I hope that helps you.