The graphic to the right displays the layer palette of the
document on the left.
The layers palette lists all the layers in an image, starting
with the topmost layer.
Note that the text has a separate layer as well as the UN
logo and the background image. You can see the small thumbnails
of the content for reference while using layers. In the case
of text layers, the icon for type appears as thumbnail, and
the text serves as name for the layer as well.
|Layers palette description
using the History Palette
As most of other editing software, Photoshop also uses the
command CTRL Z to undo the last operation done. However
you only have ONE
time undo, using CRTL Z. The good news in Photoshop
to help you correct mistakes is the History palette.
The History palette lets you jump to any recent state of the
image created during the current working session. Each time
you apply a change to an image, the new state of that image
is added to the palette.
To revert to a previous state of the image click the
name of the state on the History palette
Here are some guidelines to help you use the History palette:
1. Changes done to Photoshop's display interface, like preferences
and palette settings are not recorded in the History palette.
Only changes applied to your document will be collected in
2. By default the History palette records the previous 20
states, older states are automatically deleted in order to
free memory for photoshop.
3. Once you close and re-open a document, all states and snapshots
of the last session are cleared from the session
4. States are added from the top down.
5. Each state is listed with the name of the tool or command
used to edit the image.
To reverse all changes made to the image since it was last
Choose File > Revert, and click Revert.
This example shows the steps taken since the opening of the