For example, pressing Preset & holding F1 will 
save the present settings to memory slot 0 
(saved to M0). 
  There are overall 10 groups of memory number 
for preset setting (M0 ~ M9). Only M0 ~ M3 are 
available in soft-keys, whereas the rest groups 
M4 ~ M9 can be saved in the Save/Recall Files 
utility under Menu system. Refer to page 105 
for more details. 
  The preset key will be lit green when active. A 
beep will be heard (Buzzer is set to ON) and a 
message will displayed when the settings are 
saved.