Hint: I always use http://htmledit.squarefree.com/ to code!

Changing the style (formatting) of text:

Bold Text
<b>TEXT</b>

Big Text
<big>TEXT</big>

Emphasized Text
<em>TEXT</em>

Italic Text
<i>TEXT</i>

Small Text
<small>TEXT</small>

Strong Text
<strong>TEXT</strong>

Subscribed Text
<sub>TEXT</sub>

Superscribed Text
<sup>TEXT</sup>

Inserted Text
<ins>TEXT</ins>

Deleted Text
<del>TEXT</del>

Underlined Text
<u>TEXT</u>

Right-To-Left Text
<bdo dir="rtl">TEXT</bdo>

This is what ( bold text ) looks like.

  

This is what ( big text ) looks like.

  

This is what ( emphasized text ) looks like.

    
  

This is what ( italic text ) looks like.

 
 

This is what ( small text ) looks like.

 
    

This is what ( strong text ) looks like.

This is what ( subscribed text ) looks like.

 

This is what ( superscribed text ) looks like.

 
  

This is what ( inserted text ) looks like.

 
  

This is what ( deleted text ) looks like.

    
  

This is what ( underlined text ) looks like.

 
 

This is what ( right-to-left text ) looks like.
If you want yours to look like the examples, just put words before and after the codes to make other text normal and important text "pop out".