- [Instructor] In this movie, I'm going to demonstrate
the relationship between undoing and redoing in Illustrator,
not because it's exclusive to artboards,
but rather because it's a fundamental concept
when using this very powerful program.
Behind the scenes, I went ahead and moved artboard one
independently of numeral one inside of the same document
we were working with in the previous movie,
and I can still undo that operation by going up
to the edit menu and choosing the undo command or
pressing control Z here on the PC or command Z on the Mac,
and I can undo any previous operations as well
by continuing to press control or command Z.
The same goes for redoing.
I can go up to the edit menu and choose the redo command
at this point or press the keyboard shortcut,
control shift Z or command shift Z on the Mac,
and I can continue to press that keyboard shortcut
multiple times in a row to redo as many operations
as there are to redo.
At some point, I am going to run out of operations to redo,
however, at which point the redo command
under the edit menu will appear dimmed.
The great thing about multiple undo's inside of Illustrator
is that they survive a save operation,
so if I go up to the file menu and choose the save command
or press that keyboard shortcut,
control S or command S on a Mac.
I have now saved the document, as indicated
by the lack of asterisk after the title
here in the title tab, and yet I can still
press control Z or command Z on a Mac
in order to undo the various operations
that I applied before saving.
The one thing you cannot undo in Illustrator,
however, is a revert.
For example, if I go up to the file menu
and choose the revert command, or I can press
the keyboard shortcut, F12 here on the PC,
on the Mac, it's a very different shortcut
of command option Z.
Then I'll get this alert message which tells me that
I'm going to abandon all of my modifications
and reload the saved version of my document.
It's very important that you respond
to this alert message deliberately,
because it is permanent.
Notice if I click on the revert button, in order to
restore that saved version of the document,
which now features the artboard
disassociated from the numeral one,
and notice if I go up to the edit menu,
both the undo and redo commands are dimmed,
so if I want to restore my document to the way it looked
when I first opened it in the previous movie,
I'm going to have to do so manually
by switching to the artboard tool, which, once again,
you can get by pressing shift O, and then I'll just go ahead
and drag that artboard into place and, assuming that I have
smart guides turned on, as by default, then at some point,
I'm going to see those intersection lines appearing
through the center of artboards two and five,
at which point I'll go ahead and release in order to
reestablish that artboard to its proper location.
Then, I'll press the escape key
in order to return to the black arrow tool.
I'll go up to the view menu and choose fit all in window
in order to center my artboards, and then I'll go
up to the file menu and choose the save command
in order to save my modifications to disk.
That is the relationship between undoing and reverting.
Specifically, you can undo and redo
just about anything you like, except for the revert command.