# 3.6 Special Parameter

**Geometry Location Curve for line element**

* Start\_Pt\_X (IsRead)
* Start\_Pt\_Y (IsRead)
* Start\_Pt\_Z (IsRead)
* End\_Pt\_X (IsRead)
* End\_Pt\_Y (IsRead)
* End\_Pt\_Z (IsRead)
* X\_Axis\_Orientation (IsRead)

**Geometry Location Point for point element**

* Location\_Pt\_X (Double)
* Location\_Pt\_Y (Double)
* Location\_Pt\_Z (Double)
* Y\_Axis\_Rotation (Double)
* In\_Room (IsRead)
* In\_Space (IsRead)
* In\_Zone (IsRead)
* Is\_Mirrored (IsRead)

**Work Shared Infomation if the document is using a central file**

* WorkSet\_Owner (IsRead)
* WorkSet\_Creator (IsRead)
* WorkSet\_Last\_Changed (IsRead)

**Instance**

* Change\_Type\_By\_Name - Change Element Type by name within the same categories (String)

**Type** 

* Instance\_Count - Instance element count under this type (IsRead)
* Type\_Name - Change type family name (String)

**Family**

* Family\_Name - Change family name (String)