Use this option to create a curve snapped to a mesh:
The Create Curve Snapped to Triangles toolbar is displayed:
The example below has 3 points per span. In this case, the highlighted area shows that the curve does not follow the triangles as accurately as using To Tolerance.
button to end the current curve at the previous point and start a new curve from the same point. The new curve is non-tangential to the first curve.
button to finish the curve.