...
Diaphragm: Specify the related diaphragm.
Cut Station (From Right)Distance from Right Edge of the Diaphragm: Specify the distance from the right side when looking toward the station's right sideto the boundary of the constructed diaphragm. Further definitions for the diaphragm boundary can be made using the Construction Direction parameter below.
Construction Direction [Left/Right]: Specify whether the diaphragm will be constructed starting from the right or left side up to the cut station.
...