This sentence should be underlined.

This sentence should be overlined.

This sentence should be stricken out.

This sentence should be blinking (if the UA supports that).

The sentence should be underlined. This sentence should be underlined.

This sentence should be underlined and overlined.

This sentence should be underlined, overlined, and stricken.

There should be no red at the end of this line.

The text of this sentence and all its spaces (including the space between the images) should be underlined, but the images themselves should not be underlined.

There should be a long blue underline between here: FAIL FAIL FAIL FAIL :and here.

There should be a long blue underline between here: :and here.