it is not control alt down it it control alt delete
It makes what is on the screen bigger. Another way to do it is ctrl + plus or ctrl + scroll wheel up/down.
flips the screen
ctrl an plus zoom the screen in an ctrl minus dezooms it
Just hold down the ctrl button and press the letter h
ctrl shift - reverses the effect of ctrl shift =
ctrl plus r reloads a webpage.
Ctrl + 1
It increases the magnification of the screen. CTRL plus _ does the reverse.
Ctrl plus J is used to justify text or a paragraph.
Ctrl plus N opens a new window in a browser.
nothing
Try control plus V