The Starts With function determines whether or not the first parameter begins with the characters in the second parameter.
Parameter: string1
The string to test. This can come from a source node, the result of another function, or a value that you specify.
Parameter: string2
The beginning string to test for. This can come from a source node, the result of another function, or a value that you specify.
Returns: boolean
True or false indicating whether the first parameter begins with the second parameter.