XF 2.1 \FX\BbCode\Renderer\Html vs \FX\Html\Renderer\BbCode

[Slion]

Anyone care to explain what is the difference and relationship between those two classes?
Talking about \FX\BbCode\Renderer\Html and \FX\Html\Renderer\BbCode.

 

[Jeremy P]

The former renders BB code as HTML, and the latter renders HTML as BB code.