We've added 5 tabs to textivate, as shown above.
The idea behind this is to make it simpler, so that users no longer need to type all of their bizarrely formatted text into a single text box, taking care to put everything in the correct order. You can now add your data via the first 4 tabs -- Text, Match, Extras, Sequence -- and textivate automatically combines it into the "Show all" tab.
The "Show all" tab is the equivalent of the old-style textivate textbox. It is also the default open tab when you land on the index page.
Let's run through the 5 tabs in the order in which they appear, left to right: