Leica GPS1200+ Technical Reference Manual page 248

Step Description
Available if a free code has been previously used in the active job. Accesses
FREECODE Last Used Free Codes. To select from a list of last used free codes.
The free codes are sorted by time with the most recently used code at the top of
the list.
In FREECODE Last Used Free Codes press ATRIB (F3) to type in attribute
values.
3. STORE (F1) stores the free code, any associated attribute values and time related
information.
Coding GPS1200+ 248