Options

Question 1

used to set the foreground (front) & background (back) colors of an image, can also be used to change the colors of text, etc

Answer 1

Set Foreground/ Background Color

Question 2

used to switch back and forth between modes to protect and unprotected selected areas of editing

Answer 2

Edit in Quick Mask / Standard Modes

Question 3

used to switch between full screen and standard screen mode

Answer 3

Switch Screen Mode