The tab button goes over a certain amount of spaces at a time so you don't have to push the space bar so many times. It also switches typing spaces, like if you have one box you can type in on the internet, like in your email, the username, for example, stevejobs@mac.com on the first line, and press tab, you can keep typing but in the password line, for example, *******.
I would say computer slang (or text talk) is just to help us type fast, and have fun! here is a website with 'slang' words although many of these are rarely used. http://www.netlingo.com/acronyms.php/
Tabs with browsers is where you keep multiple sites open at once with the ability to flip back and forth at any given time. The tab key on your computer works like a space bar except it jumps a set number of characters ahead.
After the fact.
teddy
Marked For Later
right-mouse-click
infrastructure major program office
Computer slang is like a language that lots of peole around the world come up with. For example: "BRB" is a type of word using computer Slang. It means "Be Right Back." It is so people dont need to spell out the really, really long words.
In the computer language the word "progra" is short for program. The word "progra" is shorthand or slang for the word program in the computer language.
the tab currently displayed
If you mean slang as in internet slang, then it means "Certified Old Fart".
Tab can be use to go through the various buttons on a webpage. Alt + Tab is good for switch from program to program that are open on your computer.
Its either that or they can't be bothered to type the whole word (if on computer) so they use a shorter version of it. Slang can mean a weakness in the vocabulary, or it can mean that a person is trying to fit in by using the same slang that they hear everyone else using.
The abbreviation sk8 mean on craigslist means Skate. The term sk8 is a computer skater slang used to shorten the word when typing.