4.Function buttons
Function Function Function Function
key1 Key2 key3 key4
Pressing any of the Function Key buttons reveals the icons which indicate the functions of these buttons. A box around the icon for Function Key1 or Function Key2 indicates that this option is selected and this defines the operation of the navigation buttons. With the default settings, the key functions are as follows:
Function Key 1 toggles between Align Image and Cursor.
Function Key 2 cycles through Visible on/off, Auto/Manual, and Light on/off. Function Key 3 toggles between Live and Freeze.
Function Key 4 opens the menu.
See appendix A2 for a full list of Function Key button functions.
4.1.Moving the cursor
4.1.1.Press Function Key 1 
to toggle to the Cursor icon 
. The emissivity value will be displayed at the top of the screen.
4.1.2.Use the left/right and up/down navigation buttons to move the cursor to the desired position.
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