Swap the Last Two Characters Typed with a Keyboard Shortcut
How many times have you typed something to discover the last two characters are in the wrong order? You know, when “the” turns into “teh” and “something into “somethign”, a fairly common general mistype. Apparently it happens often enough for there to be an individual keyboard shortcut to instantly swap the last two typed characters, and that keyboard shortcut is Control+T.
Open just about any app in Mac OS X and try it yourself, get the hang of it and it’s certainly faster than hitting delete twice and retyping the two characters again.
This is an old keyboard shortcut from the unix world of text editors that has carried over into OS X. The keyboard shortcut is most useful if you have autocorrect disabled, otherwise those minor typos tend to fix themselves.
Great tip from @maguay