def initialize(options={})
      @row = @column = @left_column = @top_row = @right_column = @bottom_row = 0
      @left_offset = 15
      @top_offset = 2
      @right_offset = 50
      @bottom_offset = 5
      @visible = true
      @id = (0...8).map{65.+(rand(25)).chr}.join
      parse_options options
      yield self if block_given?
    end
Creates a new VmlShape
@option options [Integer] row
@option options [Integer] column
@option options [Integer] left_column
@option options [Integer] left_offset
@option options [Integer] top_row
@option options [Integer] top_offset
@option options [Integer] right_column
@option options [Integer] right_offset
@option options [Integer] bottom_row
@option options [Integer] bottom_offset