If there are elevation spaces that occur during triangulation, these can be completed by adding a triangle.
Instead of triangluation by increasing the parameter values of the longest triangle side (?) within the sparse points in terrain, filling of created gaps with 'Add Triangle' will give more realistic results and affect other operations (cubage, cross section etc.).
Add Triangle operation should be carried out when TRIANGLE MODEL is active with Point Capturing Tools (?) Triangle elevation information that is created after the operation will be obtained automatically by the program.