Any-angle routing in Altium?
Recent versions of Altium allow any-angle-routing. While routing, just click Shift+Space until the routing mode changes to any-angle. I'm pretty sure this has been supported at least as long as the program has been called "Altium".


  Is there a way to modify already existing tracks in an any-angle way? (Other than deleting and remaking them?)


I'm not sure if you have to be in a certain mode or something, but usually if I just click-and-hold the endpoint of a trace segment, it will let me move the end without constraining the trace direction.