Collector.ModelGroupByName
Dynamo Hierarchy: Rhythm>Revit>Collector>Collector.ModelGroupByName
Description:
This will collect all instances of a model group by given name.
Inputs:
groupName : string
Outputs:
groupInstances : Element
Documentation now at:
https://github.com/johnpierson/RhythmForDynamo/wiki/Applications
Documentation now at:
https://github.com/johnpierson/RhythmForDynamo/wiki/Applications

Dynamo Hierarchy: Rhythm>Revit>Elements>CurtainGrid>CurtainGrid.AddLineByPoint
Description:
This node will add a gridline at the specified place on the curtain wall grid.
Inputs:
curtainGrid : Autodesk.Revit.DB.CurtainGrid
locationPoint : Point
Outputs:
curtainGridLine: CurtainGridline

Dynamo Hierarchy: Rhythm>Revit>Elements>CurtainGrid>CurtainGrid.ByWallElement
Description:
This node will retrieve the curtain grid and U/V Gridlines from the given wall.
Inputs:
curtainWall : Wall
Outputs:
curtainGrid : CurtainGrid
uGrids : CurtainGridline
vGrids : CurtainGridline