#20 Rotate a formation around an arbitrary point

[Nigel Phillips]

If the player has set up a formation of units (e.g. a line, arc, wedge or whatever) if may be useful to "rotate" the whole lot around an arbitrary point - i.e. moving them and changing their directions but keeping the formation shape the same (just pointing a different way). This might look *very* cool, I think, but may be difficult to handle in the GUI (you'd have to specify the formation, the point to rotate them about, and the angle to rotate them through). It may also be difficult to handle in the core simulation, except as a series of move/rotates?