# File lib/allison.rb, line 4
  def if_exists (item = nil)
    unless item
      self unless self =~ /(%(\w+)%)/
      "\nIF:#{$2}\n#{self}\nENDIF:#{$2}\n"
    else
      "\nIF:#{item}\n#{self}\nENDIF:#{item}\n"
    end
  end