Samsung SCX-5639FR-XAA - Manual (Page 268)

Printing features
108 4. Special features
► Margins tab
• Use Margins: Set the margins for the document. By default,
margins are not enabled. The user can change the margin
settings by changing the values in the respective fields. Set by
default, these values depend on the page size selected.
• Unit: Change the units to points, inches, or centimeters.
► Printer-Specific Settings tab
Select various options in the JCL and General frames to customize
various settings. These options are specific to the printer and depend
on the PPD file.