Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual page 1457

markup Comments or revision instructions from someone who reviewed a building design.
When you publish construction documents as DWF files, the files can be marked up electronically using a
program such as Autodesk Design Review. Then the markups can be linked back into Revit Architecture to
display the desired changes. See Linking DWF Markup Files on page 1321.
masking region A defined area that obscures elements in a view. Masking regions are useful when you are
creating a model family from an imported 2D DWG file, and you need the model element to obscure other
elements when placed in a view. You can also use them to hide parts of a drawing.
For more information, see Masking Regions on page 1087.
Masking regions sketched in upper corners
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