Using TITLE attribute

Not to be confused with the [TITLE] element seen in the [head] section

NOTE...
There are numerous OTHER attributes that can be added to elements. For more see a list here


But for now I will talk about the below...

E.g.
Hover over the red WHO to get a pop-up explanation.
With any luck it will tell you what it stands for...in a similar way to the ToolTip box.

the   title="pop-up example"   is an ATTRIBUTE that goes in an ELEMENT.
E.g.
  <p>Some text and mention <abbr title="World Wrestling Entertainment">WWE</abbr> in the middle<p>

Note... <abbr></abbr> is used to denote an abbreviaton or acronym.

Try me
Some text and mention WWE in the middle

Example of a title with an image (hover over image)