HP 8112A Operating, Programming And Servicing Manual page 59

Store and Recall Key
Note
The HP 81 12A has the capability to store nine complete sets of mode
and parameter information in it's memory.
To store settings, press (STO/RCL). The digital display now reads
unX, where X is the file identity number ( 1 to 9). The right hand
vernier key is used to alter the value of X, to determine which fi l e the
parameter set will be stored as. Now press the bottom of the left
hand vernier key and the current instrument settings will be stored in
the selected file.
To recall settings, press (sTO/RCL ). The digital display now reads
unx, where X is the file identity number ( 1 to 9). The right hand
vernier key is used to alter the value of X, to determine which
parameter set file will be recalled. Now press the bottom of the
center vernier key and the instrument settings will be altered to those
of the stored file which has been selected.
RCL 0 reverts the instrument to it's standard setting, see Chapter 2.
If no settings have been stored, the instrument will revert to standard
settings whichever file number is selected for recall.
Operating 4-1 5