Anyone familiar with MyBB?

Hello again everyone. I have been very busy recently and have had no time for this board, but I will be back within the week. But before I do, I wonder: Is anyone familiar with the Forum software MyBB? I am trying to add a MyCode on my board that will be something like this,

wrap text with [sd]Genesis 1:1[/sd]

and it comes up "In the beginning God..."

I'm not too sure how to do thins and have been at it for hours now... Any help?