Sublime Text is brim-full of editing features. This topic just scratches the surface of what’s possible.
Column Selection can be used to select a rectangular area of a file. Column selection doesn’t operate via a separate mode, instead it makes use of multiple selections.
You can use additive selections to select multiple blocks of text, or subtractive selections to remove a block.
Windows: Ctrl + Alt + Up and Ctrl + Alt + Down
Linux: Alt + ⇧ + Up and Alt + ⇧ + Down
OS X: ⌃ + ⇧ + Up and ⌃ + ⇧ + Down
Multiple selections let you make sweeping changes to your text efficiently. Any praise about multiple selections is an understatement. This is why:
Select some text and press Ctrl + D to add more instances. If you want to skip the current instance, press Ctrl + K, Ctrl + D.
If you go too far, press Ctrl + U to deselect the current instance.
Ctrl + L expands the selections to the end of the line. Ctrl + Shift + L splits the selections into lines.
You can copy multiple selected lines to a separate buffer, edit them there, select the content again as multiple lines and then paste them back into place in the first buffer.
The list is long; all available options can be found under Selection. To name a few:
Need to swap two letters or, better yet, two words? Experiment with Ctrl + T.
The Edit, Selection, Find and Goto menus are good places to look for handy editing tools. You might end up using just a few of them, but the rest will still be there for when you need them.