this 1EdTech standard defines a method for representing the intended behavior of an authored learning experience such that any learning technology system can sequence discrete learning activities in a consistent way. The standard defines the required behaviors and functionality that conforming systems must implement. It incorporates rules that describe the branching or flow of instruction through content according to the outcomes of a learner's interactions with content. This standard was released to the public in March 2003 and is used to provide a functional extension to a 1EdTech Content Package. It is one of the keystone standards in the Shareable Content Object Reference Model (SCORM).