Samsung LCD TV LE26R41BD Owner's Instructions Manual page 3

Note : If there are borders around the
displayed picture (top or sides), then
extended viewing could result in the
border leaving a trace image on the
screen.
Note : If the borders at the left, right and the
center of the screen remain fixed for
an extended period of time, the
amount of light transmission will also
remain varied and as a result the
borders may leave traces.