A FORMULA is any expression that can be evaluated to return a value. We call them "FORM FORMULAS" because they are always evaluated in the context of a specific FORM and they are alway placed in properties of ant ITEM TEMPLATE OBJECT that accept FORMULAS as their value

FORMULAS can be used to:

• Assign a calculated value to an ITEM in a FORM. In this case, the ITEM does not need input form a user, because it will be automatically calculated

• Assign a default value to an ITEM: Sometimes it is necessary to assign a default value to an ITEM even though it is still necessary the input from a user

• ITEM conditions: an ITEM can have an associated condition that determines whether that ITEM will be used in the FORM or not (see ITEM TEMPLATE OBJECT)