ctrl+s is used to save the document.
ctrl an plus zoom the screen in an ctrl minus dezooms it
[CTRL]+C is achieved by holding CTRL while pressing C.
It saves the file.
ctrl shift - reverses the effect of ctrl shift =
ctrl plus r reloads a webpage.
Ctrl + 1
It makes what is on the screen bigger. Another way to do it is ctrl + plus or ctrl + scroll wheel up/down.
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.
Ctrl-A, Ctrl-C, Ctrl-V, Ctrl-S