# File lib/rvg/rvg.rb, line 216
        def initialize(width=nil, height=nil)
            super
            @width, @height = width, height
            @content = Content.new
            @canvas = nil
            @background_fill = nil
            @background_fill_opacity = 1.0  # applies only if background_fill= is used
            @background_position = :scaled
            @background_pattern, @background_image, @desc, @title, @metadata = nil
            @x, @y = 0.0, 0.0
            @nested = false
            yield(self) if block_given?
        end