Have you ever been chating with someone on facebook and saw underlined and bold words, but never saw the options or how to underline letters while chating. Here are the simple tricks involved.
1. To underline a word, type it as follows
_Word_
It would appear as Word
2. To bold are word, type as
*Word*
Then it would appear as Word
3. To underline and bold a word, type as
_*Word*_
Then it would appear as
Word
I hope this is a helpful tip.