perl5 User Agent Restrictions?

emery@localeyes.com
Wed, 11 Jun 1997 20:37:21 -0400 (EDT) 

This restriction was present in the perl4 libwww code.  

+ $Library = 'libwww-perl/0.40';
+ __END__
+
+ The first line of this file sets the User-Agent and Version number of
+ libwww-perl and should not be changed unless you have modified the code
+ to work beyond its originally intended purpose AND permission has been
+ obtained from Roy Fielding at <fielding@ics.uci.edu>.

Is there any similar kind of restriction with User Agents with perl5?  I
cannot find one.  Thanks for your help.  --- Emery

H. Emery Ford, programmer                       Work: (703)893-9577
LocalEyes Corporation                           Fax : (703)893-9501
emery@localeyes.com                             Home: (301)589-0919

       Your Search Ends Here. => http://www.localeyes.com

 "Of all the treasures a State can possess, the human lives of its 
citizens are for us the most precious." --- Iosif V. Dzhugashvili