Builds points on a curve at higher densities where the curve is at a tighter radius. This can be controlled in a couple of ways. It will ask you to select:
Maximum Chordal Deviation. Which defines the greatest distance the mid point of a line between any two points on a curve can deviate from that curve without adding an additional point.
Maximum Trim Edge Angle. Which sets an additional thresh- old such that if the angle between any two chordal lines is greater than the threshold a new points is built.
Maximum Chord Length. Allows you to set a maximum spacing between points along the curve. This can be helpful in ensuring a minimum point spacing along straight sections.
All the points built with this command will be constructed perfectly on the mathematical definition of the curve. * Note* that the graphical depiction of a curve also uses a similar approximation and if the graphical display is not equal to or higher than the construction tolerance the points may not appear to be on the curve even when they are (to control the graphical display go to the User Options>Display tab, Surface Rendering Options.