On the MobileRead forum (
http://www.mobileread.com/forums/showthread.php?t=94129) isotherm and others pointed out that the K2 trick to decrease margins works on the K3. I can confirm that it works on my K3. To decrease the margins on the K3 follow these steps:
Step (1): If using Windows be sure to set
Folder Options to
Show hidden files, folders, and drives and uncheck the
Hide unprotected system files option.
Step (2): Close all books and go to the K3
Home screen.
Step (3): Connect your K3 to your PC via the USB cable.
Step (4): Using windows Explorer locate the following file
KINDLE:\system\com.amazon.ebook.booklet.reader\reader.pref. Where
KINDLE equals the drive Windows assigned to your K3.
Step (5): Using Notepad edit
KINDLE:\system\com.amazon.ebook.booklet.reader\reader.pref and change the setting
HORIZONTAL_MARGIN=40 to a smaller number like
HORIZONTAL_MARGIN=20.
HORIZONTAL_MARGIN=40 equals 20 pixel margins on left and right for a total of 40 pixels. So decide how many pixels you want your margin left to be and multiply it times two. Using 20 works well. Using 10 it gets a little small. Using 0 (zero) gets rid of margins but makes it difficult to read.
Step (6): Save the file
KINDLE:\system\com.amazon.ebook.booklet.reader\reader.pref.
Step (7): Eject and unplug your K3.
Step (8 ): From the K3
Home screen press
Menu and select
Settings to go to the
Settings page.
Step (9): From the K3
Settings screen press
Menu and select
Restart to restart the K3.
NOTE: Once the K3 restarts your margins are reset and will remain reset unless you change the
Words per Line setting which will return to margins to factory settings.