 The next two numbers (11) are called the sequence identifier and identify where the unit is in the sequence of units, e.g. 01 is the 1st unit in the learning design sequence of units in the TAE training package.
<coherence>  The next two numbers (11) are called the sequence identifier and identify where the unit is in the sequence of units, e.g. 01 is the 1st unit in the learning design sequence of units in the TAE training package.