# File lib/spreadsheet/format.rb, line 339
   def bold=(weight)
      weight = 1 if weight == true
      weight = 0 if weight == false
      weight = 0x2BC if weight.nil?
      weight = 0x2BC if weight == 1
      weight = 0x190 if weight == 0
      weight = 0x190 if weight < 0x064
      weight = 0x190 if weight > 0x3E8
      @bold = weight
      @bold
   end