LDCad 1.7 Alpha 1 (win+linux)

[N. W. Perry]

Do you mean using just 2 dimensions? as ctrl+home already takes the relative grid into account.

Also just in 2D? Could be handy, I'll put it on my next version's todo as I'm (finally) close to finishing the Alpha 2's todo list 

Yes, in 2D for both ideas. For example, if want to un-rotate a path point, but still have its Y-axis point along the path as it's supposed to. Ctrl+home will make the Y-axis vertical. Also useful for tinkering with Technic assemblies.

I guess in most cases, it's not really resetting the rotation, but just rounding to the nearest 90-degree matrix.