Formatting tags include EM, STRONG, H1, H2, H3, H4, H5, H6, I, and B. These tags change the look of text on the Web page.

This is the EM (emphasis)tag: Hello
This is the STRONG (strong)tag: Hello
This is the H1 (header level 1)tag:

Hello

This is the H2 (header level 2)tag:

This is the H3 (header level 3)tag:

This is the H4 (header level 4)tag:

This is the H5 (header level 5)tag:

This is the H6 (header level 6)tag:

This is the I (italics)tag:Hello
This is the B (bold)tag:Hello

The I and B tags are on the way out. They are considered deprecated code (phased out and obsolete). The new Web browsers will ignore deprecated tags.