6.1.3 - Coding error?

6.1.3 seems to have a similar coding error to that which I reported in 6.1.1 
and 6.1.2

The final line of the example code in 6.1.3 gives a value for the ref 
attribute of "/my:last-name".

It seems to me that the value should be either "my:last-name" or 
"/my:person-name/my:last-name".

Andrew Watt