code: def to_s(indent=0)
           prefix = indent > 0 ? ' ' * indent : ''
           text   = StringIO.new
  
           text << "#{prefix}Information"
           text << "\n#{prefix}   Title:    #{@title}"    unless @title.nil?
           text << "\n#{prefix}   Author:   #{@author}"   unless @author.nil?
           text << "\n#{prefix}   Company:  #{@company}"  unless @company.nil?
           text << "\n#{prefix}   Comments: #{@comments}" unless @comments.nil?
           text << "\n#{prefix}   Created:  #{@created}"  unless @created.nil?
  
           text.string
        end
docs: This method creates a textual description for an Information object.
  
   ==== Parameters
   indent::  The number of spaces to prefix to the lines generated by the
             method. Defaults to zero.