Merge Region Command; Assign Layers Command - Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual

Blue control arrows when border is selected
To split a layer or region vertically, highlight and select a horizontal boundary. That boundary can be
the outside boundary, or an inside boundary created if you previously split horizontally.
Vertical split preview
TIP It is helpful to zoom in on the outer horizontal boundary to split it vertically.

Merge Region Command

When editing vertically compound
horizontally or vertically into new regions. Highlight a border between regions and click to merge them.
When you merge regions, the position of the cursor when you highlight a border determines which material
prevails after the merge.
The material from the right region prevails when you merge
The material from the left region prevails when you merge

Assign Layers Command

When editing vertically compound
assigns the number, material, and function of that row.)
It is more useful to assign layers to regions vertically, rather than horizontally. For example, you might split
finish layer 1 into several regions. Then you could assign another finish row to some of those regions and
create an alternating pattern, such as brick over concrete.
walls, the Merge Region command merges wall regions together
walls, the Assign Layers command assigns a row to a layer or region. (It
Vertically Compound Walls | 571