You can
print on both sides of the paper by selecting one of the
2-sided printing options on the Main
or Page Layout tab. (Some options are not available on the Main
tab.)
Automatic double-sided printing is only available if
you have loaded plain paper in these sizes:
Letter
(8.5 × 11 inches [216 × 279 mm])
and
A4 (8.3 × 11.7 inches
[210 × 297 mm]).
Note: Some options
may be unavailable, depending on other settings you have
chosen.