Answer:
The easiest way is to use the "Generate Arc" function (see the image). The values h1, h2, and h3 arise from the graphic to the right of the dialog box. Thus, h1 and h3 are the distances of the edge nodes from the top of the catenary. Value h2 is the mean value. Furthermore, you can define in this window how many divisions and which member type the members should have.
