Alesis BRC Reference Manual page 16

current tape location is copied into the currently display locate point
(Locate 01–20) or Song Start (01–20). In Manual mode, when the
COPY TAPE LOCATION button is pressed, the current tape location is
copied to the manual locate point (Locate 00), and the display
automatically goes to the Locate 00 page. This is useful when you
want to be absolutely sure you don't accidentally write over a Locate
that you wanted to keep.
For more information on locating and storing locate points, see
section 4.1.
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