Hi, Great bit of software, even better that its free.

My question is, is it possible to lock a point in one plane? i.e can you lock the x coordinate and still be able to move the y or z? I know that it can be done in the different views, for example in the body plan you cant adjust the x coord whilst dragging the point. But somehow when I change back to another view I always seem to move it out of line.

Hopefully you understand what I'm asking,