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Marks
The CI-80 has two types of marks which can be inscribed on
the display: event mark and target point mark.
Figure 27 Appearance of event mark and target point mark
Event mark
The EVENT key inscribes present position on the display. It is
useful for marking important locations, etc. 25 event marks may
be entered. When the event mark memory is full the oldest
event mark is erased to make room for the latest.
Target point mark
The TARGET POINT key inscribes a target point mark on the
display. The target point mark is useful for estimating 3-D
deformation of fishing tackle (net, etc.) by the effect of tides at
different depths. 25 target point marks can be entered. When
the target point mark memory is full the oldest target point mark
is erased to make room for the latest.
Tide effect can be set on the MARK menu.