I use the line "require 'perl0000.lib';" to load an entire set of subroutine files with a single command.

 
# perl0000.lib
# Load all group 0 Subroutines:
#
# Written:  1999-06-03  James Alarie

require 'perl0001.lib';    # header and footer
require 'perl0002.lib';    # form_parse
require 'perl0003.lib';    # time and date variables
require 'perl0004.lib';    # table_s, table_a, table_h
require 'perl0005.lib';    # unquote
require 'perl0006.lib';    # casel, caseu, casem
require 'perl0007.lib';    # subset


#***** Accessed correctly:
1;