Ctrl + Z is Undo and Redo (last step only), Alt + Ctrl + Z is step backward and Shift + Ctrl + Z is step forward.
Try Ctrl + Y. There is no common universal shortcut for Redo, although you might find the option in some programs, e.g., Adobe Photoshop.
The Alt key.
Shift + F6
Shift + F6
Alt key or Option on Mac.
It is a code that you receive once you buy the software in order to prove that you actually bought the software, until you inter a valid serial key, you can use Photoshop in trail mode for 30 days.
the delete key on a keyboard, erases characters on the left side of the cursor
Couldn't find answer at all in the link i have on the search results. I tried but did not find. So i don't know how many characters is a serial key for an adobe product such as photoshop.
A post hot key delay is a delay in your BIOS system after you have typed in or posted the hot key. In order to avoid the delay, type in " #o" before pressing the hot key.
If you lost your project, you have to redo it.
Redo it Redo it
In Photoshop the Command (Apple) key + Z will Undo your last action using the Option (Alt) key with Command + Z will repeatedly Undo your previous actions - effectively scrolling back up through the History palette.