How can I lay a section plane into the model to hide disturbing model zones?
You can define a virtual plane so that only everything either in front or behind this plane is displayed. Find the corresponding function on the "Insert" menu where you select the "Clipping Plane". This plane can be shifted gradually or also rotated.
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions