[firedrake] reordering meshes

Hi all,

From what I see in the documentation, reordering of meshes is turned on by default. But when I look at the mesh generation functions like RectangleMesh(...), I see that one of the default options is "reorder=None". Am i actually reordering the mesh if I ran something like:

mesh = UnitSquareMesh(10,10) Thanks, Justin