There are now short URL's for all the major views of a Pen.

Original Pen:
http://codepen.io/bennettfeely/pen/esrtc

Short URLs:
Full Page: http://cdpn.io/esrtc
Editor: http://cdpn.io/e/esrtc
Details: http://cdpn.io/d/esrtc

And if you are PRO:
Live View: http://cdpn.io/v/esrtc
Collab Mode: http://cdpn.io/c/esrtc
Professor Mode: http://cdpn.io/p/esrtc

Our SMS feature will send you a short URL just to keep the text a bit shorter. Free users get the Full Page view, PRO uses get the Live View.

We could use link tag to expose these in the markup:

But we're not sure what use it is. Anyone know?