Markers segment long pipe runs to improve displacement calculation accuracy.
Use markers specifically to enhance analysis precision for extended non-branched pipelines.
Typical marker spacing: 500 meters for long straight sections.
Apply markers selectively to optimize analysis performance and accuracy.
Typical marker placement:
Insert marker at selected node: Insert > Restraint > Marker
or use toolbar: 
View marker properties:
Double-click element in 3D view
Select element and click 
toolbar icon