Hello Roberto
I don't think there is any default option under SpaceClaim options to change this font size of letters in section. Thank your kind input, I would share this idea with our development team.
The thickness of lines can be changed by editing the template files located under ~ANSYS Inc\v192\scdm\Library\DrawingFormats.
For opening a new drawing with only top view, you can first create a template with only top view and save it as SpaceClaim template format (.scdot). Then, under SpaceClaim options, go to Support Files section and enable "Use template for new designs" option and specify the path of template file. See below image for reference. Once done, if you open any new session, you will have a drawing sheet with the top view.
You are navigating away from the AIS Discovery experience