Pop-on captions, pop on and off the screen.
They are used with programs with multiple characters.
They can be strategically placed
as to indicate to the viewer who is speaking.
For example,
if the person is on the left side
of the screen
the pop-on captions would appear
on the left side.
If they are in the middle,
the caption would appear in the middle.
Or, if they are on the right side
of the screen
caption would pop-on the right side.