11. The method of claim 8 , in which the chart includes a flow chart.
11. The method of claim 8 , in which the chart includes a flow chart. 12. The method of claim 11 , in which the displaying the virtual 3D graphical representation of the chart includes displaying a perspective indication, and in which the perspective indication is visually indicative of a spatial relationship between the 3D graphical representation of the chart and the 2D graphical representation of the chart.