Function List window
This window displays a list of the functions (including constants, operators, and math symbols) you can use in a calculation. It allows you to insert any of these components directly into the selected field.
For more information, click 
on the title
bar of the window, and then click a field or button.
Tips:
- To locate an entry, type the first character of its description.
- Double-click a function to insert it at the cursor position.