Nikon CoolPix S1200pj Reference Manual page 70

Using A (Auto) Mode
Option
AF area mode
Autofocus mode
C
Functions That Cannot Be Used Simultaneously
There are functions with which this setting cannot be enabled (A 63).
52
Allows you to select how the camera determines the
focus area for autofocus, from Face priority (default
setting), Auto, Manual, Center, or Subject tracking.
When Single AF (default setting) is selected, the camera
focuses only while the shutter-release button is pressed
halfway. When Full-time AF is selected, the camera
focuses even when the shutter-release button is not
pressed halfway. You may hear the sound of the camera
focusing.
Description
A
E 42
E 45