Lexmark X646ef Menus And Messages Manual page 73

Menu item Purpose
Shadow Detail Adjusts the amount of shadow detail
visible on a copy.
Scan edge to Specifies if the original document is
edge scanned edge-to-edge prior to
sending the FTP job.
Using the MFP menus
Values and descriptions
-4 to +4 (0*)
Off*
On
Settings
73
-4 preserves the least amount of shadow
detail.
+4 preserves the most shadow detail.