#### E.7.2 Air terminal library object

This example includes a library file containing an air terminal type. It explains how type definitions can be included from an external library.

- Air terminal type with hyperlinks
- Air terminal type source file

The air terminal type consists of a single port, with property sets defined on the type and port. Figure E19 illustrates the air terminal type, where a green arrow indicates the port, placed at the arrow head.

> NOTE The arrow head is not part of the exchange, only the port definition. Viewers may represent ports in different ways.

The property sets have backing templates from an external library file.

> Standard property sets (defined within this specification) do not require templates to be included; they are shown in this example for illustration, such as if custom property sets were to be used.

Figure E19 — Air terminal type representation

The type has a nested port, as illustrated in Figure E20.

Figure E20 — Air terminal type object graph

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