Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 1567

reference elevation An elevation tag that refers to an existing elevation or drafting view. When you add a
reference elevation to a project, Revit Architecture does not create a new view for it. Instead, the reference
elevation uses an existing elevation, allowing you to indicate different areas that have identical elevations.
You can place a reference elevation in a plan or callout view.
For more information, see Reference Elevation on page 134.
reference label Text displayed in a callout tag when a reference callout is created in the plan view, or text
displayed in a section head when a reference section is created in the plan view.
See Reference Sections on page 142 and Reference Callouts on page 154.
Reference callout with callout tag
reference line A line used when designing families of model elements or placing elements in a building
model. When you draw a reference line in a view, the line is visible in other, related views.
A straight reference line provides 4 planes to sketch on. One plane is parallel to the work plane of the line
itself, another is perpendicular to that plane, and the remaining 2 are at the ends of the line (perpendicular
to the ends). All planes go through the reference line.
A curved reference line (for example, an arc or a spline) has 2 planes at the ends of the element.
The following image shows a selected reference line (and its reference planes) in multiple views. For detailed
information about reference lines, see The Families Guide on page 418.
reference plane A 2-dimensional plane used when designing families of model elements or placing elements
in a building model.
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