How to make HTML open a hyperlink in another window or tab?

<a href="http://www.starfall.com/" target="_blank">Starfall</a>

Whether it opens in a tab or another window though is up to how a user has configured her browser.

Simplest way is to add a target tag.

<a href="http://www.starfall.com/" target="Starfall">Starfall</a>

Use a different value for the target attribute for each link if you want them to open in different tabs, the same value for the target attribute if you want them to replace the other ones.

use target="_blank"

<a target='_blank' href="http://www.starfall.com/">Starfall</a>

You should be able to add

target="_blank"

like

<a href="http://www.starfall.com/" target="_blank">Starfall</a>