    # File lib/prawn/font/ttf.rb, line 134
          def pdf_flags
            @flags ||= begin
              flags = 0
              flags |= 0x0001 if @ttf.postscript.fixed_pitch?
              flags |= 0x0002 if serif?
              flags |= 0x0008 if script?
              flags |= 0x0040 if italic_angle != 0
              flags |= 0x0004 # assume the font contains at least some non-latin characters
            end
          end