Amazon says an update to its low-end non-touchscreen Kindle reader will improve readers\' experience by providing crisper text with higher contrast. The software update for the $79 Kindle will be delivered automatically to users\' devices or they can manually download the update from Amazon\'s Web site, CNET.com reported Tuesday. In addition to the more readable font, the update provides Parental Controls that can restrict access to the Experimental Web Browser, Archived Items and the Kindle Store, Amazon said. Books with complex layouts and formats and comic books using Kindle Panel View will be supported with the update, and improved table and image viewing, including panning and zooming, will be available on supported titles, Amazon said.