Using the frog pick or X-acto, depress the spring-loaded
back directly behind the legend. Carefully slide
the sticker into the slot between the legend and
the back-plate. Remove the frog pick and press
the button firmly to cause the sticker to adhere
securely to the legend. Carefully remove the sticker
and legend by gently pulling while wiggling the
tape side to side.
Prior to inserting new legends, make sure they
are trimmed to size. It works best if the top
to bottom measurement is only about nine millimeters.
The width can be ten millimeters.