Apple MC413LL/A manual Shoulders relaxed

You may have to raise your chair so that your forearms and hands are at the proper angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, you can use a footrest with adjustable height and tilt to make up for any gap between the floor and your feet. Or you may lower the desktop to eliminate the need for a footrest. Another option is to use a desk with a keyboard tray thatÕs lower than the regular work surface.

Shoulders relaxed

Forearms and hands in a straight line

Forearms level or tilted slightly

Lower back supported

Thighs tilted slightly

45Ð70 cm (18Ð28 in.)	Top of the screen at or
	slightly below eye level
	(You may need to adjust
	the height of your display
	by raising or lowering
	your work surface.)
	Screen positioned to
	avoid reflected glare
	Clearance under
	work surface
	Feet flat on the floor
	or on a footrest

84Appendix B Safety, Use, and Care Information