Toshiba F15 - Manual (Page 285)

285 Hot Keys
Stand By mode
5.375 x 8.375 ver 2.3
Stand By mode
Fn + This hot key places the computer into Stand By mode.
A message box is displayed by default to confirm that
the computer is going into Stand By mode. This
message box can be set so it does not display.
Sample Stand By confirmation box
For more information about Stand By mode, please see
“Using Standby Mode” on page 114 .