Smeg SA109M-8 Instructions For Use Manual page 16

If the symbols to the side of the display are lit up, it means:
If flashing, it indicates that the time is being set; if steady it shows the
normal display (on multifunction models only).
Indicates that the door lock is activated during the automatic cleaning
phase (on pyrolytic models only).
Timer countdown activated.
Delayed-start timed cooking activated.
Child lock function ON (see 6.10 Secondary menu).
Timed cooking activated
6.5 Operating modes
This appliance is designed to have two operating modes.
18
Instructions for the user
STAND-BY condition: this condition is set when the
function selection knob is positioned on the "0" symbol.
The appliance displays the current time.
ON condition: this condition is set when the function
selection knob is turned to any function and the
selected temperature appears on the display, or the
message "PYRO" if in pyrolysis.