You can divide a file at all the track mark positions.
PLAY/STOP・ENTER.

“Divide All Track Marks?” appears on the display.
or
+ to select “YES,” and then press
PLAY/STOP・ENTER.
The “Dividing...” animation appears, and the file is divided at all the track mark positions. All the existing track marks in the files will be erased.
A suffix made up of a sequential number (“_01,” “_02”) is added each of the divided files.

A. Before dividing a file:
are track marks
B. After erasing track marks: A file is divided at all the track marks.
(stop) to exit the menu mode.
PLAY/STOP・ENTER.
(stop) while the “Dividing...” animation is displayed.