User's Manual

<5> EXIT
Select “ Exit” function will return to main function without
saving data.
6-2-2-4 Delete Mark：Delete mark within 10 kilometers.
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In “ DELETE MARK” function, it will display mark list within ten
kilometers. You can select any of the “MARK” to delete.
6-2-2-5 Elapse ：Turn on “ ELAPSE”
Turn off “ ELAPSE”
6-2-2-6 Exit ：Exit
(7) Area Calculate
“ Area Calculate ” way should around area fringes, and then it will
calculate approximately area.