In photoshop the
history palette records almost every step you make when editing in Elements.
It lets you undo the changes and step back through recent changes. At any time,
you can click on an earlier state and remove the changes you made. This allows
multiple undo.The undo command undoes only the last performed operation, while
the history palette lets you undo a series of tool operations or commands. To
open the history palette, choose window> Show History.
In the history
palette each state is listed with the name of the tool or command used
to change the image, with the oldest state at the top of the list followed
by more recent states.
snap shot at the top of the list to display the state of the image when
you first opened it. You can also use the File > Revert command to
reverse all the changes made.
can select a state from the history palette and continue editing the image from
that state. Then all the states that come after the selected one are eliminated
by default.For eg. in the above fig, suppose you selected the state ' Rectangular
marquee ' and used a paint brush to paint. Then the states come after ' Rectangular
marquee '( ie. paintbucket, stroke and deselect) are deleted. You can select
the allow Non-Linear History option to make changes to a selected state without
deleting subsequent states. (For that click the right arrow in the top and select
You can set the
number of states available. For that click the right arrow in the top and select
History options and enter the number. Once you have done more edits than you
have history states set, the oldest edits are eliminated from History as new
edits occur. Remember that each brush stroke, and each mouse click with a tool
is one edit. If you think you may need to step back in history (use multiple
undo), keep an eye on you history states.
Note the little
tab on the extreme left end of the last state (the dark blue state). Drag on
this to return to earlier states. This can be fun to play with it will scroll
your image backwards like a movie in reverse. Drag it forward again to watch
the movie the other way.
History is not
saved once you close the document.