Apple Macintosh System 7.5 - Manual (Page 13)

5 Installing System Software
OpenDoc
OpenDoc is a new plug-in software architecture for the Mac OS. With
OpenDoc, you can extend the usefulness of your applications by adding new
functionality in the form of self-contained software components, or “parts.”
When you drag a part into an OpenDoc-aware application (also called a
“container application”), you add that part’s functionality to the application.
You can also create documents entirely out of OpenDoc parts, simply by
combining the parts you need. A variety of these parts will be available from
both Apple and third-party sources, including parts for placing Internet
resources directly into documents.
For example, the letter portion of the document below was created using a
word-processing container application. Then a document composed of
various OpenDoc parts was dragged into the container document. The
buttons at the bottom of the embedded OpenDoc document are Internet
parts—clicking them connects you to an Internet location.
IMPORTANT Your upgrade kit comes with the basic OpenDoc software. To use
OpenDoc, you need applications or parts that use the OpenDoc technology.
Call your software manufacturer directly to see if they support OpenDoc.
Internet part