Apple Macintosh System 7.5 - Manual (Page 9)

Step 1: Decide what to install
The System 7.5 upgrade package consists of four major components:
m software to upgrade your computer to System 7.5
m QuickDraw GX for more powerful printing, typography, and color
publishing capabilities
m PowerTalk electronic mail and collaboration software
m OpenDoc software supports a new type of software plug-in called a “part.”
Most of the parts will be available from third-party software manufacturers
who support OpenDoc technology.
The next pages briefly describe the features of each component. After you
install System 7.5, you may also want to install QuickDraw GX, PowerTalk,
and OpenDoc. QuickDraw GX, PowerTalk, and OpenDoc will work on most
Mac OS computers. Make sure you check the memory and processor
requirements in Step 2 before you decide to install these additional
components.
For more detailed information on new features, see Chapters 5 (“Getting
Help”) and 6 (“What’s New”) of this manual.
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Installing System Software