Which Command lets you free memory, used by the Undo command, the History Palette, or the Clipboard?

The mask created by the Replace Color command is permanent.

Photoshop supports a maximum pixel dimension of 300,000 by 300,000 pixels per image.

The Out Of Gamut option works only on RGB and Lab images.

Which one is not a type of Variable?

Which file format saves a document of any size as well as preserves all the Photoshop features?

How many pixels are in 1 inch?

What key can be used to keep a line segment going in a straight horizontal path, a straight vertical path, or a 45 degree angle?

Under which menu can you find the option to sharpen or unsharpen a mask?

Where would you find the option to add a drop shadow to a text or image?

Which one is not a tool ?