ColdFusion expressions consist of operands and operators. Operands are constants and variables, such as "Hello" or MyVariable. Operators, such as the string concatenation operator (&) or the division operator (\/) are the verbs that act on the operands. ColdFusion functions also act as operators.
The simplest expression consists of a single operand with no operators. Complex expressions consist of multiple operands and operators. For example, the following statements are all ColdFusion expressions:
12 MyVariable (1 + 1)/2 "father" & "Mother" Form.divisor/Form.dividend Round(3.14159)