refers to the innermost enclosing loop. This may include dynamically
looking back your call-stack at run time to find the LABEL. Such
desperate behavior triggers a warning if you use the C<use warnings>
-praga or the B<-w> flag.
+pragma or the B<-w> flag.
Unlike a C<foreach> statement, a C<while> statement never implicitly
localises any variables.
Or if you are certainly that all the C<&&> clauses are true, you can use
something like this, which "switches" on the value of the
-C<HTTP_USER_AGENT> envariable.
+C<HTTP_USER_AGENT> environment variable.
#!/usr/bin/perl
# pick out jargon file page based on browser