AutoLisp Source - Version 1.0 AutoLISP source code can be run on AutoCAD or IntelliCAD (Bricscad, ProgeCAD, Cadopia, etc.), on any number of computers. They are: - "Triangulation" will generate triangular 3DFACE entities, on the convex hull of the set of points, - "Load XYZ and 4D files"; file types: x y z color, x y z scalar, x y z r g b, no. x y z code,- "B-spline control polygon and interpolated contour lines" creates the control polygon and interpolates a POLYLINE with cubic B-Spline; the interpolated curve passes through the initial points and you can control its curvature; you can also generate interpolated contour lines,- "Intersect 2 3DFACE and contour lines" intersects 2 triangular 3DFACE entities and generatea the contour lines,- "Modify longitudinal profile" contains 3 new commands which increase productivity in the modification of drawings YTE changes the Y texts of some points, relative to an origin point, XTE changes the X text of some points, relative to X=0 of the current UCS, PTE inserts elevation and slope with triangle on a POLYLINE.