[Name] src [Required] false [Attribute Constraints] Must not occur with the 'srcexpr' attribute or the element. [Default Value] None [Valid Values] Any URI. [Description] A URI to be passed to the external service. See below for details. [Type] 
URI
U R I
v a l u e e x p r e s s i o n
V a l u e e x p r e s s i o n
I D
L o c a t i o n e x p r e s s i o n
L i s t o f l o c a t i o n e x p r e s s i o n s
b o o l e a n