Emphasis in dialogue

[bluejester12]

"The dragon takes you to the treasure."

How would I mark it so the reader knows "The dragon takes you to the treasure" and not "The dragon takes you to the treasure."

Is italics OK?

[Chesher Cat]

...or you can underline it for emphasis.

[MrJayVee]

Don't use italics. If you absolutely must emphasize a word, underline. But again, only if it’s really necessary. Most newbie writers overuse the emphasizing words thing.

[scripter1]

italics because they get lost in the script. They don't stand out enough, especially if the pages get copied and recopied several times.

Underline.