here is a <a href=“www.straightdope.com”> Linky-loo</a>
Nope, here it’s [ url=http://www.straightdope.com ]The Straight Dope[ /url ] (take out the spaces inside the brackets)
This will produce
You can get the code for just about everything BB will do by using the buttons and drop-downs in the edit window, and just seeing what happens.
For example, I didn’t know about [ INDENT ] indent, and now I do. 
[ /INDENT ]
ο ιατροσ, θεραπευσον σεαυτον