Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 1503

category A group of elements that you use to model or document a building design. For example, categories
of model elements include walls, windows, columns, and beams. Categories of annotation elements include
dimensions, tags, and text notes.
Categories are organized into families of elements with similar purposes and characteristics. Families are
further organized into types, as shown.
ceiling plan A drawing that shows the design of a ceiling.
For more information, see
centerline A line that indicates the middle of a dimension or model element (such as a column or a wall).
In Revit Architecture, you can use an element s centerline to measure, dimension, align, resize, specify
constraints, and perform other functions in a building model.
Measuring from the centerlines of walls
central file A master project file for a model on which multiple team members are working. The model can
be subdivided into functional areas (worksets), such as interior, exterior, and site. The central file stores the
current ownership information for all elements in the project, and acts as the distribution point for publishing
work to the rest of the team. All users work in local copies of the file and periodically save changes to the
central file so that other users can see their work.
For more information, see
Ceilings on page 718.
Working in a Team on page 1249.
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