Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual page 1538

If you choose to annotate model elements using keynote numbers only, you can use a keynote legend to
provide descriptive text for each keynote number. By using a keynote legend, you avoid cluttering the
drawing with text.
For more information, see Keynote Legend on page 1120.
keynoting A method of annotating drawings to identify building materials, describe assembly instructions,
or provide special instructions or explanations. Keynotes help to standardize information related to the
building design and can help reduce clutter in drawings.
In Revit Architecture, each sheet can display its own keynote legend, or all keynotes for the project can be
documented on one sheet. For more information, see Keynotes on page 1117.
label A text placeholder added to tags or title blocks. You create a label as part of a tag or title block family
while in the Family Editor. When you place the tag or title block in the project, you replace the label with
the actual value for that instance.
For example, the following title block template contains labels that indicate the type of information to be
entered on a sheet. When you create a sheet, the labels are replaced with actual values.
landing A platform between sets of stairs, or the floor at the head or foot of a ramp or a set of stairs.
layer (1) In Revit Architecture, the adjacent materials of a compound structure, such as a wall. You can
define the layers in a compound structure. See Compound Structure on page 813.
layer (2) In AutoCAD, a mechanism for defining, organizing, and controlling the display of drawing objects.
When you export a Revit project to a CAD format, you can create a layer mapping file to map Revit categories
and subcategories to CAD layers. See Exporting Layers on page 1360.
1496 | Glossary