Vertical editing isn’t a new concept. Googling it with regards to TextMate, I see that it’s oft-referenced as one of the top features. But darnit, I didn’t just start using it until a couple weeks ago. So killer. In TextMate, trigger vertical editing by holding Option and then select using the mouse.

Looking back at CSS3 formatting, vertical editing pairs best with vertically aligned properties. It totally makes sense for editing big blocks of vendor-specific redundant properties. No more cringing when you have to tweak a transition style.

  .foo {
    -webkit-transition: opacity 1s;
       -moz-transition: opacity 1s;
         -o-transition: opacity 1s;
            transition: opacity 1s;
  }