You can erase the track mark that is located at just before the current position.
tab - “Erase Track Mark,” and then press
.

“Erase Track Mark?” appears on the display.
or
to select “Execute,” and then press
.
The “Erasing...” animation appears in the display window and the selected track mark will be erased.

A. Before erasing a track mark:
is the stop position.
B. After erasing a track mark: The track mark just before the stop position will be erased.
STOP to exit the menu mode.
.