Dell 3115cn Color Laser Printer - Manual (Page 210)

Values:
Text&Photo Uses for documents with both text and photo/gray tones.
Photo Uses for documents with photo or gray tones.
Text* Uses for documents with text.
Lighter/Darker
Purpose:
To adjust the density to make the copy lighter or darker than the original.
Values:
Normal* Works well with standard typed or printed documents.
Darker1 Works well with light print or faint pencil markings.
Darker2
Darker3
Lighter3 Works well with dark print.
Lighter2
Lighter1
OnHook
Purpose:
To send or receive a fax manually.
Values:
Off* Does not send or receive a fax manually.
On Sends or receives a fax manually.