to undo on a mac computer, you have to go to edit and press undo. or go to file and press undo. forgot which one.
press control, option, command and the number 8. press them again to undo it
Assuming you do not have a backup/Time Machine archive of the Mac before it was messed up... Insert the Mac OS X installation disc and hold down the C key while the Mac starts up. This will boot the Mac from the installation disc. Undo what you did to change the Mac Login screen. You kept a copy of the original files didn't you?
do means you do it and undo means to undo or get ride of it
redo-is when you do sometyhing over! undo-is when u undo something
There is no full form.. it is opposite for do...
You can't undo algebra, you just can do it.
Undo is a verb.
No, "undo" is not a noun. It is a verb that means to reverse or cancel something.
I hate to break it to you, but formatting a drive completely erases all data. There is a chance you can get your data back with a tool like http://www.ptdd.com/datarecovery/format-drive-recovery.htm
You can't undo algebra, you just can do it.
Ctrl + Z = Undo
Default number of undo actions: Excel 2007 = 100 undo actions Excel 2003 = 16 undo actions