This will predeclare all the subroutine whose names are
in the list, allowing you to use them without parentheses
even before they're declared.
Unlike pragmas that affect the $^H hints variable, the use vars and
use subs declarations are not BLOCK-scoped. They are thus effective
for the entire file in which they appear. You may not rescind such
declarations with no vars or no subs.
perldoc2tree.cgi: /usr/lib/perl5/5.8.8/subs.pm: cannot resolve L in paragraph 10.
perldoc2tree.cgi: /usr/lib/perl5/5.8.8/subs.pm: cannot resolve L in paragraph 10.
See perlmodlib/Pragmatic Modules and strict/strict subs.