styling.rb

Prawn::Document.generate("family_style.pdf") do     
  ["Courier","Helvetica","Times-Roman"].each do |f|
    [:bold,:bold_italic,:italic,:normal].each do |s|  
      font f, :style => s
      text "I'm writing in #{f} (#{s})"             
    end
  end
  
  font "Helvetica"
  
  text "Normal"
  text "Bold",        :style => :bold
  text "Bold Italic", :style => :bold_italic
  text "Italic",      :style => :italic
  text "Normal"
end