Testing this here on Andi's Wiki to make sure I didn't butcher any of his work on my site.

This is underline on the outside, italics on the inside.

This is underline on the outside, italics on the inside.

This is italics on the outside, underline on the inside.

This is italics on the outside, underline on the inside.

Notice how the italics get overridden somehow by the underline…