A
The level or distance between the base portion of the window and the area of the floor above the ground level.
Sill Height
A structural circulation element used to connect large vertical distances between levels in a building.
Stairs
Basic elements that you would assemble on a construction site such as walls, roofs, and floors.
System Family
Annotation elements that identify and quantify elements such as doors, windows, and rooms in a project.
Tags
A block of text, somewhat automated, added to a presentation to provide information on a file.
Title Block
A constraint that can be set to a selected level to determine a wall's top height.
Top Constraint
A tool that identifies the currently selected family type and provides a drop-down from which you can select a different type.
Type Selector
Displays another level of the model under the current plan view.
Underlay
A set of horizontal planes that control the visibility and display of objects in a plan view.
View Range
A window or multiple windows to display drawing in different scales or show different parts of a building.
Viewport
A void in a wall to allow for windows, doors, or niches.
Wall Opening
A vented barrier provided in a wall opening to admit light and air into the structure and also to give outside view.
Windows
Lines that indicate which elements the dimensions refer to.
Witness Line