### Select at least one face and at least one line/cline[guide-line], run the tool...
### a cpoint [guide-point] is added at the intersection of each face's plane and each line,
### an edge/cline[guide-line] need not physically intersect the face,
### the cpoint[guide-point] can also be located off a face, on it's plane.
### edges/clines[guide-lines] parallel with a face's plane are ignored.
### You can project any lines onto any face-plane - try the edges of a complex 3D shape...


