Creating design geometry is often done parametrically in Revit,

which means that the related elements in the design are defined by linked parameters defining the interaction between the two.

By the end of this chapter, you'll know about:

• The three different types of elements in Revit project.
• Making relations between elements using Constraints.
• The difference between type properties and instance properties.
• Ways to select the various kinds of elements in a project.
• The function of TAB key.
• Create, save and modify a selection.
• How to control size of the element graphically.