# File lib/spreadsheet/workbook.rb, line 9 def initialize(file) super @file = file @format = Format.new @active_sheet = 0 @first_sheet = 0 @biffsize = 0 @date_system = 1900 @xf_index = 16 @worksheets = [] @formats = [] @url_format = add_format(:color=>"blue", :underline=>1) end