Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual page 923

2 On the Options Bar, click
3 Select a vertex, edge, face or point anywhere on the slab to start the split line.
NOTE Startpoints and endpoints can be added anywhere on the face of the slab. If your cursor is over a
vertex or edge, the editor will snap to 3D vertices and edges and present standard snap controls with temporary
dimensions along the edges. If no vertex or edge is snapped to, then on selection, the line end will be
projected to the closest point on the surface. No temporary dimensions will be created on the face.
4 Select another vertex, edge, face or point anywhere on the slab to end the split line.
A new edge will be added to the face of the slab.
(Draw Split Lines tool).
Using the Draw Split Lines Tool | 885