Hello am Richard and am using ArchiCAD 26, but I have an issue I have noticed with my section line markers . they are not showing unless I select them,what can I do to make them show in the plan view

How can I be able to see the elevation lines in my floor plan view ,and how do I also get to edit its line weight ,I have attached an image of my elevation lines showing and when they are not showing I cant find out why they are not showingelevation ...