Epson 821p - Manual (Page 34)

34 Projecting
If you’re using a Macintosh with OS X:
You may need to set up your system to display on the projector screen
as well as the LCD screen. Follow these steps:
1. From the Apple menu, select System Preferences , then click
Displays.
2. Select VGA Display or Color LCD , click Arrangement or
Arrange , and make sure Mirror Displays is checked.
If you’re using a Macintosh with OS 9.x or earlier:
You may need to set up your system to display on the projector screen
as well as the LCD screen. Follow these steps:
1. From the Apple menu, select Control Panels , then click
Monitors or Monitors and Sound.
2. Click the Arrange icon.
3. Drag one monitor icon on top of the other.
Click here
Select Mirror
Displays
Click here
Drag one
monitor icon on
top of the other