Does the honorific 'Heir Presumptive' apply when introducing any male in the line of succession?

From: Raymond E. Feist
Date: 23 April 1996

It's a matter of court protocol. When you have three people being introduced, and the 1st of these is the 1st "Heir Presumptive," he gets the title. The other's don't because what that says is, "Here is the next guy to get the crown if the 1st guy over there is dead." Considered bad taste. smiley

Best, R.E.F.