JRC JMR-7230-S Instruction Manual page 550

[Clear] tab
To erase tracks by specifying a color
1
Select the color of other ship's track to be erased from the [Track Color] combo box.
You can select from All, White, Gray, Amber, Magenta, Blue, Cyan, Green, Yellow, Orange and
Dark Red.
White/Black interchanges under the following conditions.
RADAR screen: Always White
ECDIS screen: Black at Day1/Day2 (or Day), white at Day3/Dusk/Night
A message dialog box prompting you to confirm erasing appears.
2
To execute erasing, click on the [OK] button. To cancel erasing, click on the [Cancel]
button or the [X] button.
Section 16 Setting up Screen View
Color you selected
16-28