Routine

A routine is a piece of source code that performs some functionality. A routine may be coded directly as part of a program, or if it is usable by more than one piece of code, it may be defined as a function if it returns a value, or as a procedure if it does not. A property is a routine which is callable as a function in an object, and can be assigned a value. A routine in an object that is callable but cannot be assigned a value is a method.