windows 7 - Move away from textbox using tab button

I was wondering about this for quite some time now.

This applies to pretty much every software that has multiline inputs at some point, but I will give an example with a webpage since it's "more universal".

Let's say you are filling up a form in a web page. That has the following fields:

• A single line text input named "username"


• Another one named "email"


• A big "comments" section represented by a textarea.


• A "Visible" checkbox input.


• And finally a "Submit" button to complete the submission (obviously).

Let's say that you use the mouse to focus on the first input.

You type in your username and click Tab to move to the next input.

You enter your email and again move to the next input using Tab.
Your cursor is now sitting on the glorious "comments" textarea and start typing a comment. As long as you are finished, you hit tab and realize that instead of moving to the checkbox, you insert a tab character in the textarea while the cursor remains hooked.

Is there any combination of keys to move out of the textarea, when the Tab button inserts a tab character?

P.S. As I see while typing this question, the textarea SO provides allows moving to the next field with the Tab button, so it has something to do with Javascript. What can be done to other software though?