Dell Precision 620 - Manual (Page 66)

Read-only files are said to be write-protected. You can write-protect a 3.5-inch diskette by sliding its write-protect tab to the open position or by
setting the write-protect feature in the System Setup program.
WWW
World Wide Web
X
XMM
extended memory manager. A utility that allows application programs and operating systems to use extended memory in accordance with the
XMS.
XMS
eXtended Memory Specification
Z
ZIF
zero insertion force. Some computers use ZIF sockets and connectors to allow devices such as the microprocessor chip to be installed or
removed with no stress applied to the device.
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