subs(3)

NAME
     subs - Perl pragma to predeclare sub names

SYNOPSIS
         use subs qw(frob);
         frob 3..10;


DESCRIPTION
     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.

     See the section on Pragmatic Modules in the perlmodlib manpage and the
     section on strict subs in the strict manpage.