# File ../lib/fox/core.rb, line 167
    def grow(*args)
      if args.length == 1
        margin = args[0]
        grow(margin, margin, margin, margin)
      elsif args.length == 2
        hormargin = args[0]
        vermargin = args[1]
        grow(hormargin, hormargin, vermargin, vermargin)
      else
        leftmargin = args[0]
        rightmargin = args[1]
        topmargin = args[2]
        bottommargin = args[3]
        self.x = self.x - leftmargin
        self.y = self.y - topmargin
        self.w = self.w + (leftmargin + rightmargin)
        self.h = self.h + (topmargin + bottommargin)
      end
      self
    end