What's the difference between "Perl" and "perl"?

     32 :-)  [  ord('p') - ord('P')  ]

     Larry now uses "Perl" to signify the language proper and "perl" the
     implementation of it, i.e. the current interpreter.  Hence tchrist's quip
     that "Nothing but perl can parse Perl."

     On the other hand, the aesthetic value of casewise parallelism
     in "awk", "sed", and "perl" as much require the lower-case 
     version as "C", "Pascal", and "Perl" require the 
     upper-case version.  It's also easier to type "Perl" in 
     typeset print than to be constantly switching in Courier. :-)
    
     In other words, it doesn't matter much, especially if all
     you're doing is hearing someone talk about the language;
     case is hard to distinguish aurally.