Getting started : Repeating commands
 
Repeating commands
The Repeat command lets you reapply the previously applied effect or correction without having to re-access the corresponding dialog box.
The last command that can be repeated is always displayed in the Edit menu. If the previous command cannot be repeated, the Repeat command is unavailable.
To repeat a command
Edit workspace 
Choose Edit Repeat.
You can repeat multiple commands by recording a script and running it on each image. For information on using scripts, see Scripting basics.
You can also repeat a command by holding down Shift while selecting any toolbar button or menu item. The last used settings are applied with the repeated command.