require 'rubygems'
require 'prawn'

Prawn::Document.generate 'test.pdf' do |pdf|
  pdf.stroke_color = 'FF0000'

  pdf.bounding_box [0, pdf.bounds.top], :width => 20, :height => 20 do
    pdf.stroke_bounds
  end
  pdf.bounding_box [22, pdf.bounds.top], :width => 20, :height => 20 do
    pdf.stroke_bounds
  end
end