Casio TE-2400 User Manual page 27

Q
J Receipt on/off key
Use this key twice to change the status "receipt issue" or
"no receipt." In case of "receipt issue", the indicator is lit.
B
K Date/Time key DATE/
TIME
Between transactions, this key displays the current time
and date.
/
L Help key
Use this key to look up the procedures to set date/time,
tax table etc.
f, j
M Paper feed key
Hold this key down to feed paper from the printer.
TE-2400 User's Manual 27
E