# File lib/pdf/writer.rb, line 2741
2741:       def [](pdf, info)
2742:         @foreground ||= DEFAULT_FOREGROUND
2743:         @background ||= DEFAULT_BACKGROUND
2744: 
2745:         desc  = info[:descender].abs
2746:         xpos  = info[:x] - (desc * 2.00)
2747:         ypos  = info[:y] + (desc * 1.05)
2748: 
2749:         ss = StrokeStyle.new(desc)
2750:         ss.cap  = :butt
2751:         ss.join = :miter
2752:         pdf.stroke_style! ss
2753:         pdf.stroke_color @foreground
2754:         pdf.circle_at(xpos, ypos, 1).stroke
2755:         pdf.stroke_color @background
2756:         pdf.circle_at(xpos, ypos, 0.5).stroke
2757:       end