Historical organisation structure/charts

Summary

How can we capture and view historical organisation structure/charts?

Content

Currently there is no feature to export or print organisation charts from the Directory or Person Gallery. How do other customers manage this, particularly when asked to provide historical organisation structure information? 

We currently only have real-time data and other than screen-printing the organisation chart every so often, we have no way of capturing point-in-time org. structures (which show as a chart, rather than a simple report).