HIGHLIGHTING FOR EMPHASIS 

Highlighting a word for specific emphasis is achieved by heavy vocal focus on particular words in a sentence. 

That is no welcome.

That is no welcome.

That is no welcome.

That is no welcome.

The word underlined, if emphasised by inflection,stands out a particular way in the thinking of the listener.

It had to happen.

It had to happen.

It had to happen.

It had to happen.

Emphasis helps make speech live and gives it a three dimensional impact in the minds of audience members.