[Web4lib] persistent urls- clarification

[Jonathan Gorman]

> Imagine browsing through the opac and knowing that the 
> book you want to find is always in 2xxx.xx. At some point the library 
> switches over from LC to Dewey.

*cough*
The analogy of course makes better sense if the Library changes from 
Dewey to LC.  And if you know it's somewhere in 2xx's, not 2xxx.

Details, details, details.

  Jonathan T. Gorman
  Visiting Research Information Specialist
  University of Illinois at Champaign-Urbana
  216 Main Library - MC522
  1408 West Gregory Drive
  Urbana, IL 61801