[pantherman]

When you press TAB, making something a different level, the item in question takes on the style associated with the level. So if you have a couple of paragraphs at Level 1 and you TAB a sentence to make that sentence a "Level 2 sentence", then that sentence will take on Level 2's style.

If the Level 2 style contains underlining, bold or whatever, then the item will become underlined, bolded etc. You can see what each style contains by looking at the "Style" inspector, which gives a breakdown of all elements in the style for each Level.

Hope this helps.