quick access toolbar
It contains the save, undo, redo commands initially, but it can be customised so that you can have what you want on it.
In Microsoft Word, When you click on the redo button, the redo button changes to the repeat button which is dimmed. So no, you can't redo and repeat at the same time.
redo means do something over again and undo means to do it back
edit
The most crucial structure for recovery operations is the redo log, which consists of two or more preallocated files that store all changes made to the database as they occur. Every instance of an Oracle Database has an associated redo log to protect the database in case of an instance failure.
Undo (Ctrl-Z) - Undoes the last comment undertaken i.e Delete a word , click UNDO the word is printed back to its position. Redo - (Ctrl-Y) Redoes the command again in this example deletes the word again
Although Ctrl + Z will undo most all commands before you save a file, if you accidentally undo too much you can always use Ctrl+Y to redo the undos in reverse order.
yes every so often
They can be but it would be counter-intuitive. Redo is the antonym for undo and should only be enabled when the last command was an undo, which should automatically disable the repeat command. Redo remains enabled until the undo history is empty, or another command besides undo is selected, at which point the repeat command should be enabled again.
The "Redo" button on most games allows for the last operation to be disregarded. If a person makes a game play they did not like they can use the "Redo" button. Sometimes a game will regulate that only a certain number of "Redo" operations are possible.
The quick access tool bar in Word displays a small or specific selection of commonly used commands in Word. This tool bar can be customized to the user's preference for icons or commands that they commonly use on a daily basis.
it should be redo after the most three months and it does really look awful when it grows out. If you are trying not to redo it just dye your hair in a natural color almost like yours, but get it done by a profesional hair dresser.