What does the "/" symbol mean in CSS?

Question

Possible duplicate:
CSS Size with Slash

I just saw some CSS code. Can someone please tell me what the "/" symbol means, and if there are any recommendations for using it?

font: 2px/3px; 

Edit:

Here is the whole block of code (to give context)

 .funky { font: 2px/3px; font-family: fantasy; font-size: 30em; font-weight: bold; } 

Answer 1

In this example, this means font-size:2px and line-height:3px . Although I'm not sure if this works without the rest of the font rule.
http://www.impressivewebs.com/css-font-shorthand-property-cheat-sheet/