The Detail Layer tool tags a selected rebar with a detail family to indicate its layer. The default detail family “SOFiSTiK_Detail_Layer” provides two different styles to represent the rebar layer (Flag - and Slash Style). Additionally you can set symbols (e.g. for bar bent away from - and towards viewer) in the properties palette of the family.
Tip
You can set the desired family and family type which will be used by the detail layer tool, on the Rebar tab in the settings dialog.