First you can check this source notebook to understand what is explained below: Sculpture_Enneper.nb
To view the source of this page, click on "View Page Content" in the left bar. It will open a new window. This will enable you to see the code and the results.
You can extract the first graphic from the uploaded notebook by calling:
You can extract the second graphic from the uploaded notebook by calling:
You can extract the cell containing the first occurrence of "NormalizeVector" by calling:
You can extract the cell containing the third occurrence of "ParametricPlot3D" by calling: