Lowrance HDS-5x Operation Manual page 43

Radar
Symbology
Used to turn on/off symbols displayed on the PPI screen, including range rings, range
markers and compass overlay. Rather than turn off each display feature individually,
the Symbology feature allows you to remove them all at once.
To toggle Symbology on/off highlight Symbology on the radar menu and press
enter.
EBL/VRM 1 EBL/VRM 2 EBL/VRM 1 & EBL/
VRM 2 Data Boxes
EBL/VRM
An Electronic Bearing Line (EBL) is a radial line used to show the distance of a
radar target to your vessel. A Variable Range Marker (VRM) is a range ring used to
measure the precise distance to a radar target. Selecting EBL/VRM from the Radar
Menu allows you to place up to two EBL/VRMs on the PPI display.
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