=item htmlreturnaddress - return address (HTML)
+=item htmlwatermark - watermark to show in background (HTML)
+
=item latexnotes - "notes" section (LaTeX)
=item latexfooter - footer (LaTeX)
=item latexsmallfooter - footer for pages after the first (LaTeX)
+=item latexwatermark - watermark to show in background (LaTeX)
+
=item with_latexcoupon - 'Y' to print the payment coupon (LaTeX)
=item lpr - command to print the invoice (passed on stdin as a PDF)
|| $self->ut_anything('htmlfooter')
|| $self->ut_anything('htmlsummary')
|| $self->ut_anything('htmlreturnaddress')
+ || $self->ut_anything('htmlwatermark')
|| $self->ut_anything('latexnotes')
|| $self->ut_anything('latexfooter')
|| $self->ut_anything('latexsummary')
|| $self->ut_anything('latexsmallfooter')
|| $self->ut_anything('latexreturnaddress')
+ || $self->ut_anything('latexwatermark')
# flags
|| $self->ut_flag('with_latexcoupon')
;