the default paper size is read from it. As a last resort, A4 paper is
assumed.
+@item -O foreground-color=@var{color}
+@itemx -O background-color=@var{color}
+Sets @var{color} as the color to be used for the background or foreground.
+Color should be given in the format @code{#@var{RRRR}@var{GGGG}@var{BBBB}},
+where @var{RRRR}, @var{GGGG} and @var{BBBB} are 4 character hexadecimal
+representations of the red, green and blue components respectively.
+
@item -O orientation=@var{orientation}
Either @code{portrait} or @code{landscape}. Default: @code{portrait}.