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<?xml version="1.0" encoding="iso-8859-1"?>
<!--
    $FreeBSD$

    FreeBSD Glossary Terms
	Please keep this file sorted alphabetically/ASCIIly by glossterm.

	glossterms that are acronyms should have two entries - one for
	the expanded acronym and another for the acronym itself.  The
	second of these should reference the entry for the expanded acronym
	via a glosssee element.  For example:

	<glossentry>
	  <glossterm>FUBAR</glossterm>
	  <glosssee otherterm="fubar-glossary">
	</glossentry>

	<glossentry id="fubar-glossary">
	  <glossterm>Fuc... Up Beyond All Recognition</glossterm>
	  <acronym>FUBAR</acronym>
	  <glossdef>
	    <para>Broken.</para>
	  </glossdef>
	</glossentry>

	Note that in this instance, the expanded acronym sorts below the
	unexpanded acronym.  That's OK.

	Finally, id attribute values should end in the string
	"-glossary" to avoid conflicting with id attribute values in
	the main text.

-->
<glossary xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0" status="draft" xml:id="freebsd-glossary">
  <title>&os; Glossary</title>
  <para>This glossary contains terms and acronyms used within the &os;
    community and documentation.</para>

  <glossdiv>
    <title>A</title>

    <glossentry>
      <glossterm>ACL</glossterm>
      <glosssee otherterm="acl-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ACPI</glossterm>
      <glosssee otherterm="acpi-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>AMD</glossterm>
      <glosssee otherterm="amd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>AML</glossterm>
      <glosssee otherterm="aml-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>API</glossterm>
      <glosssee otherterm="api-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>APIC</glossterm>
      <glosssee otherterm="apic-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>APM</glossterm>
      <glosssee otherterm="apm-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>APOP</glossterm>
      <glosssee otherterm="apop-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ASL</glossterm>
      <glosssee otherterm="asl-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ATA</glossterm>
      <glosssee otherterm="ata-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ATM</glossterm>
      <glosssee otherterm="atm-glossary"/>
    </glossentry>

    <glossentry xml:id="aml-glossary">
      <glossterm><acronym>ACPI</acronym> Machine Language</glossterm>
      <acronym>AML</acronym>
      <glossdef>
        <para>Pseudocode, interpreted by a virtual machine within an
	  <acronym>ACPI</acronym>-compliant operating system, providing a
	  layer between the underlying hardware and the documented
	  interface presented to the <acronym>OS</acronym>.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="asl-glossary">
      <glossterm><acronym>ACPI</acronym> Source Language</glossterm>
      <acronym>ASL</acronym>
      <glossdef>
        <para>The programming language <acronym>AML</acronym> is written in.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="acl-glossary">
      <glossterm>Access Control List</glossterm>
      <acronym>ACL</acronym>
      <glossdef>
        <para>A list of permissions attached to an object, usually either a
	  file or a network device.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="acpi-glossary">
      <glossterm>Advanced Configuration and Power Interface</glossterm>
      <acronym>ACPI</acronym>
      <glossdef>
        <para>A specification which provides an abstraction of the
	  interface the hardware presents to the operating system, so
	  that the operating system should need to know nothing about
	  the underlying hardware to make the most of it.  <acronym>ACPI</acronym>
	  evolves and supersedes the functionality provided previously by
	  <acronym>APM</acronym>, <acronym>PNPBIOS</acronym> and other technologies, and
	  provides facilities for controlling power consumption, machine
	  suspension, device enabling and disabling, etc.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="api-glossary">
      <glossterm>Application Programming Interface</glossterm>
      <acronym>API</acronym>
      <glossdef>
        <para>A set of procedures, protocols and tools that specify the
	  canonical interaction of one or more program parts; how, when
	  and why they do work together, and what data they share or
	  operate on.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="apm-glossary">
      <glossterm>Advanced Power Management</glossterm>
      <acronym>APM</acronym>
      <glossdef>
        <para>An <acronym>API</acronym> enabling the operating system to work
	  in conjunction with the <acronym>BIOS</acronym> in order to achieve
	  power management.  <acronym>APM</acronym> has been superseded by
	  the much more generic and powerful <acronym>ACPI</acronym>
	  specification for most applications.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="apic-glossary">
      <glossterm>Advanced Programmable Interrupt Controller</glossterm>
      <acronym>APIC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ata-glossary">
      <glossterm>Advanced Technology Attachment</glossterm>
      <acronym>ATA</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="atm-glossary">
      <glossterm>Asynchronous Transfer Mode</glossterm>
      <acronym>ATM</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="apop-glossary">
      <glossterm>Authenticated Post Office Protocol</glossterm>
      <acronym>APOP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="amd-glossary">
      <glossterm>Automatic Mount Daemon</glossterm>
      <acronym>AMD</acronym>
      <glossdef>
        <para>A daemon that automatically mounts a filesystem when a file
          or directory within that filesystem is accessed.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>B</title>

    <glossentry>
      <glossterm>BAR</glossterm>
      <glosssee otherterm="bar-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>BIND</glossterm>
      <glosssee otherterm="bind-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>BIOS</glossterm>
      <glosssee otherterm="bios-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>BSD</glossterm>
      <glosssee otherterm="bsd-glossary"/>
    </glossentry>

    <glossentry xml:id="bar-glossary">
      <glossterm>Base Address Register</glossterm>
      <acronym>BAR</acronym>
      <glossdef>
        <para>The registers that determine which address range a <acronym>PCI</acronym> device
	  will respond to.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="bios-glossary">
      <glossterm>Basic Input/Output System</glossterm>
      <acronym>BIOS</acronym>
      <glossdef>
        <para>The definition of <acronym>BIOS</acronym> depends a bit on
	  the context. Some people refer to it as the <acronym>ROM</acronym>
	  chip with a basic set of routines to provide an interface between
	  software and hardware.  Others refer to it as the set of routines
	  contained in the chip that help in bootstrapping the system.  Some
	  might also refer to it as the screen used to configure the
	  bootstrapping process. The <acronym>BIOS</acronym> is PC-specific
	  but other systems have something similar.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="bind-glossary">
      <glossterm>Berkeley Internet Name Domain</glossterm>
      <acronym>BIND</acronym>
      <glossdef>
	<para>An implementation of the <acronym>DNS</acronym> protocols.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="bsd-glossary">
      <glossterm>Berkeley Software Distribution</glossterm>
      <acronym>BSD</acronym>
      <glossdef>
	<para>This is the name that the Computer Systems Research Group
	  (CSRG) at <link xlink:href="http://www.berkeley.edu">The University
	  of California at Berkeley</link>
	  gave to their improvements and modifications to
	  AT&amp;T&apos;s 32V &unix;.
	  &os; is a descendant of the CSRG work.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="bikeshed-glossary">
      <glossterm>Bikeshed Building</glossterm>
      <glossdef subject="FreeBSD">
	<para>A phenomenon whereby many people will give an opinion on
	  an uncomplicated topic, whilst a complex topic receives little
	  or no discussion.  See the
	  <link xlink:href="&url.books.faq;/misc.html#BIKESHED-PAINTING">FAQ</link> for
	  the origin of the term.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>C</title>

    <glossentry>
      <glossterm>CD</glossterm>
      <glosssee otherterm="cd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>CHAP</glossterm>
      <glosssee otherterm="chap-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>CLIP</glossterm>
      <glosssee otherterm="clip-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>COFF</glossterm>
      <glosssee otherterm="coff-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>CPU</glossterm>
      <glosssee otherterm="cpu-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>CTS</glossterm>
      <glosssee otherterm="cts-glossary"/>
    </glossentry>

    <glossentry xml:id="cd-glossary">
      <glossterm>Carrier Detect</glossterm>
      <acronym>CD</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> signal indicating that a carrier
	  has been detected.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="cpu-glossary">
      <glossterm>Central Processing Unit</glossterm>
      <acronym>CPU</acronym>
      <glossdef>
        <para>Also known as the processor.  This is the brain of the
	  computer where all calculations take place.  There are a number of
	  different architectures with different instruction sets.  Among
	  the more well-known are the Intel-x86 and derivatives, Arm, and
	  PowerPC.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="chap-glossary">
      <glossterm>Challenge Handshake Authentication Protocol</glossterm>
      <acronym>CHAP</acronym>
      <glossdef>
        <para>A method of authenticating a user, based on a secret shared
	  between client and server.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="clip-glossary">
      <glossterm>Classical <acronym>IP</acronym> over <acronym>ATM</acronym></glossterm>
      <acronym>CLIP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="cts-glossary">
      <glossterm>Clear To Send</glossterm>
      <acronym>CTS</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> signal giving the remote system
          permission to send data.</para>
	<glossseealso otherterm="rts-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="coff-glossary">
      <glossterm>Common Object File Format</glossterm>
      <acronym>COFF</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>D</title>

    <glossentry>
      <glossterm>DAC</glossterm>
      <glosssee otherterm="dac-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DDB</glossterm>
      <glosssee otherterm="ddb-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DES</glossterm>
      <glosssee otherterm="des-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DHCP</glossterm>
      <glosssee otherterm="dhcp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DNS</glossterm>
      <glosssee otherterm="dns-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DSDT</glossterm>
      <glosssee otherterm="dsdt-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DSR</glossterm>
      <glosssee otherterm="dsr-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DTR</glossterm>
      <glosssee otherterm="dtr-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>DVMRP</glossterm>
      <glosssee otherterm="dvmrp-glossary"/>
    </glossentry>

    <glossentry xml:id="dac-glossary">
      <glossterm>Discretionary Access Control</glossterm>
      <acronym>DAC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="des-glossary">
      <glossterm>Data Encryption Standard</glossterm>
      <acronym>DES</acronym>
      <glossdef>
	<para>A method of encrypting information, traditionally used as the
	  method of encryption for &unix; passwords and the &man.crypt.3;
	  function.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dsr-glossary">
      <glossterm>Data Set Ready</glossterm>
      <acronym>DSR</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> signal sent from the modem to the
	  computer or terminal indicating a readiness to send and receive
	  data.</para>
	<glossseealso otherterm="dtr-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dtr-glossary">
      <glossterm>Data Terminal Ready</glossterm>
      <acronym>DTR</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> signal sent from the computer or
	  terminal to the modem indicating a readiness to send and receive
	  data.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ddb-glossary">
      <glossterm>Debugger</glossterm>
      <acronym>DDB</acronym>
      <glossdef>
	<para>An interactive in-kernel facility for examining the status of
	  a system, often used after a system has crashed to establish the
	  events surrounding the failure.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dsdt-glossary">
      <glossterm>Differentiated System Description Table</glossterm>
      <acronym>DSDT</acronym>
      <glossdef>
        <para>An <acronym>ACPI</acronym> table, supplying basic configuration
	  information about the base system.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dvmrp-glossary">
      <glossterm>Distance-Vector Multicast Routing Protocol</glossterm>
      <acronym>DVMRP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dns-glossary">
      <glossterm>Domain Name System</glossterm>
      <acronym>DNS</acronym>
      <glossdef>
	<para>The system that converts humanly readable hostnames (i.e.,
	  mail.example.net) to Internet addresses and vice versa.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="dhcp-glossary">
      <glossterm>Dynamic Host Configuration Protocol</glossterm>
      <acronym>DHCP</acronym>
      <glossdef>
	<para>A protocol that dynamically assigns IP addresses to a computer
	  (host) when it requests one from the server.  The address assignment
	  is called a <quote>lease</quote>.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>E</title>

    <glossentry>
      <glossterm>ECOFF</glossterm>
      <glosssee otherterm="ecoff-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ELF</glossterm>
      <glosssee otherterm="elf-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ESP</glossterm>
      <glosssee otherterm="esp-glossary"/>
    </glossentry>

    <glossentry xml:id="esp-glossary">
      <glossterm>Encapsulated Security Payload</glossterm>
      <acronym>ESP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="elf-glossary">
      <glossterm>Executable and Linking Format</glossterm>
      <acronym>ELF</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ecoff-glossary">
      <glossterm>Extended <acronym>COFF</acronym></glossterm>
      <acronym>ECOFF</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>F</title>

    <glossentry>
      <glossterm>FADT</glossterm>
      <glosssee otherterm="fadt-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>FAT</glossterm>
      <glosssee otherterm="fat-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>FAT16</glossterm>
      <glosssee otherterm="fat16-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>FTP</glossterm>
      <glosssee otherterm="ftp-glossary"/>
    </glossentry>

    <glossentry xml:id="fat-glossary">
      <glossterm>File Allocation Table</glossterm>
      <acronym>FAT</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="fat16-glossary">
      <glossterm>File Allocation Table (16-bit)</glossterm>
      <acronym>FAT16</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ftp-glossary">
      <glossterm>File Transfer Protocol</glossterm>
      <acronym>FTP</acronym>
      <glossdef>
	<para>A member of the family of high-level protocols implemented
	  on top of <acronym>TCP</acronym> which can be used to transfer
	  files over a <acronym>TCP/IP</acronym> network.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="fadt-glossary">
      <glossterm>Fixed <acronym>ACPI</acronym> Description Table</glossterm>
      <acronym>FADT</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>G</title>

    <glossentry>
      <glossterm>GUI</glossterm>
      <glosssee otherterm="gui-glossary"/>
    </glossentry>

    <glossentry xml:id="giant-glossary">
      <glossterm>Giant</glossterm>
      <glossdef subject="FreeBSD">
	<para>The name of a mutual exclusion mechanism
	  (a <literal>sleep mutex</literal>) that protects a large
	  set of kernel resources.  Although a simple locking mechanism
	  was adequate in the days where a machine might have only
	  a few dozen processes, one networking card, and certainly
	  only one processor, in current times it is an unacceptable
	  performance bottleneck.  &os; developers are actively working
	  to replace it with locks that protect individual resources,
	  which will allow a much greater degree of parallelism for
	  both single-processor and multi-processor machines.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="gui-glossary">
      <glossterm>Graphical User Interface</glossterm>
      <acronym>GUI</acronym>
      <glossdef>
        <para>A system where the user and computer interact with
          graphics.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>H</title>

    <glossentry>
      <glossterm>HTML</glossterm>
      <glosssee otherterm="html-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>HUP</glossterm>
      <glosssee otherterm="hup-glossary"/>
    </glossentry>

    <glossentry xml:id="hup-glossary">
      <glossterm>HangUp</glossterm>
      <acronym>HUP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="html-glossary">
      <glossterm>HyperText Markup Language</glossterm>
      <acronym>HTML</acronym>
      <glossdef>
        <para>The markup language used to create web pages.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>I</title>

    <glossentry>
      <glossterm>I/O</glossterm>
      <glosssee otherterm="io-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IASL</glossterm>
      <glosssee otherterm="iasl-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IMAP</glossterm>
      <glosssee otherterm="imap-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IP</glossterm>
      <glosssee otherterm="ip-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IPFW</glossterm>
      <glosssee otherterm="ipfw-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IPP</glossterm>
      <glosssee otherterm="ipp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IPv4</glossterm>
      <glosssee otherterm="ipv4-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>IPv6</glossterm>
      <glosssee otherterm="ipv6-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ISP</glossterm>
      <glosssee otherterm="isp-glossary"/>
    </glossentry>

    <glossentry xml:id="ipfw-glossary">
      <glossterm><acronym>IP</acronym> Firewall</glossterm>
      <acronym>IPFW</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ipv4-glossary">
      <glossterm><acronym>IP</acronym> Version 4</glossterm>
      <acronym>IPv4</acronym>
      <glossdef>
	<para>The <acronym>IP</acronym> protocol version 4, which uses 32 bits
	  for addressing.  This version is still the most widely used, but it
	  is slowly being replaced with <acronym>IPv6</acronym>.</para>
	<glossseealso otherterm="ipv6-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ipv6-glossary">
      <glossterm><acronym>IP</acronym> Version 6</glossterm>
      <acronym>IPv6</acronym>
      <glossdef>
	<para>The new <acronym>IP</acronym> protocol. Invented because the
	  address space in <acronym>IPv4</acronym> is running out.  Uses 128
	  bits for addressing.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="io-glossary">
      <glossterm>Input/Output</glossterm>
      <acronym>I/O</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="iasl-glossary">
      <glossterm>Intel&rsquo;s <acronym>ASL</acronym> compiler</glossterm>
      <acronym>IASL</acronym>
      <glossdef>
        <para>Intel&rsquo;s compiler for converting <acronym>ASL</acronym> into
	  <acronym>AML</acronym>.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="imap-glossary">
      <glossterm>Internet Message Access Protocol</glossterm>
      <acronym>IMAP</acronym>
      <glossdef>
	<para>A protocol for accessing email messages on a mail server,
	  characterised by the messages usually being kept on the server as
	  opposed to being downloaded to the mail reader client.</para>
	<glossseealso otherterm="pop3-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ipp-glossary">
      <glossterm>Internet Printing Protocol</glossterm>
      <acronym>IPP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ip-glossary">
      <glossterm>Internet Protocol</glossterm>
      <acronym>IP</acronym>
      <glossdef>
	<para>The packet transmitting protocol that is the basic protocol on
	  the Internet.  Originally developed at the U.S. Department of
	  Defense and an extremely important part of the <acronym>TCP/IP
	  </acronym> stack.  Without the Internet Protocol, the Internet
	  would not have become what it is today.  For more information, see
	  <link xlink:href="ftp://ftp.rfc-editor.org/in-notes/rfc791.txt">
	  RFC 791</link>.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="isp-glossary">
      <glossterm>Internet Service Provider</glossterm>
      <acronym>ISP</acronym>
      <glossdef>
	<para>A company that provides access to the Internet.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>K</title>

    <glossentry xml:id="kame-glossary">
      <glossterm>KAME</glossterm>
      <glossdef>
        <para>Japanese for <quote>turtle</quote>, the term KAME is used
	  in computing circles to refer to the <link xlink:href="http://www.kame.net/">KAME Project</link>, who work on
	  an implementation of <acronym>IPv6</acronym>.</para>
      </glossdef>
    </glossentry>

    <glossentry>
      <glossterm>KDC</glossterm>
      <glosssee otherterm="kdc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>KLD</glossterm>
      <glosssee otherterm="kld-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>KSE</glossterm>
      <glosssee otherterm="kse-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>KVA</glossterm>
      <glosssee otherterm="kva-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>Kbps</glossterm>
      <glosssee otherterm="kbps-glossary"/>
    </glossentry>

    <glossentry xml:id="kld-glossary">
      <glossterm>Kernel &man.ld.1;</glossterm>
      <acronym>KLD</acronym>
      <glossdef>
	<para>A method of dynamically loading functionality into a &os; kernel
	  without rebooting the system.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="kse-glossary">
      <glossterm>Kernel Scheduler Entities</glossterm>
      <acronym>KSE</acronym>
      <glossdef>
	<para>A kernel-supported threading system.  See the <link xlink:href="http://www.FreeBSD.org/kse">project home page</link>
	  for further details.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="kva-glossary">
      <glossterm>Kernel Virtual Address</glossterm>
      <acronym>KVA</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="kdc-glossary">
      <glossterm>Key Distribution Center</glossterm>
      <acronym>KDC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="kbps-glossary">
      <glossterm>Kilo Bits Per Second</glossterm>
      <acronym>Kbps</acronym>
      <glossdef>
	<para>Used to measure bandwidth (how much data can pass a given
	  point at a specified amount of time).  Alternates to the Kilo
	  prefix include Mega, Giga, Tera, and so forth.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>L</title>

    <glossentry>
      <glossterm>LAN</glossterm>
      <glosssee otherterm="lan-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>LOR</glossterm>
      <glosssee otherterm="lor-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>LPD</glossterm>
      <glosssee otherterm="lpd-glossary"/>
    </glossentry>

    <glossentry xml:id="lpd-glossary">
      <glossterm>Line Printer Daemon</glossterm>
      <acronym>LPD</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="lan-glossary">
      <glossterm>Local Area Network</glossterm>
      <acronym>LAN</acronym>
      <glossdef>
	<para>A network used on a local area, e.g. office, home, or so forth.
	  </para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="lor-glossary">
      <glossterm>Lock Order Reversal</glossterm>
      <acronym>LOR</acronym>
      <glossdef>
	<para>The &os; kernel uses a number of resource locks to
	  arbitrate contention for those resources.  A run-time
	  lock diagnostic system found in &os.current; kernels
	  (but removed for releases), called &man.witness.4;,
	  detects the potential for deadlocks due to locking errors.
	  (&man.witness.4; is actually slightly conservative, so
	  it is possible to get false positives.)  A true positive
	  report indicates that <quote>if you were unlucky, a deadlock would
	  have happened here</quote>.</para>

	<para>True positive LORs tend to get fixed quickly, so
	  check &a.current.url; and the
	  <link xlink:href="http://sources.zabbadoz.net/freebsd/lor.html">
	  LORs Seen</link> page before posting to the mailing lists.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>M</title>

    <glossentry>
      <glossterm>MAC</glossterm>
      <glosssee otherterm="mac-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MADT</glossterm>
      <glosssee otherterm="madt-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MFC</glossterm>
      <glosssee otherterm="mfc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MFH</glossterm>
      <glosssee otherterm="mfh-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MFS</glossterm>
      <glosssee otherterm="mfs-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MIT</glossterm>
      <glosssee otherterm="mit-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MLS</glossterm>
      <glosssee otherterm="mls-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MOTD</glossterm>
      <glosssee otherterm="motd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MTA</glossterm>
      <glosssee otherterm="mta-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>MUA</glossterm>
      <glosssee otherterm="mua-glossary"/>
    </glossentry>

    <glossentry xml:id="mta-glossary">
      <glossterm>Mail Transfer Agent</glossterm>
      <acronym>MTA</acronym>
      <glossdef>
	<para>An application used to transfer email.  An
	  <acronym>MTA</acronym> has traditionally been part of the BSD
	  base system.  Today Sendmail is included in the base system, but
	  there are many other <acronym>MTA</acronym>s, such as postfix,
	  qmail and Exim.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mua-glossary">
      <glossterm>Mail User Agent</glossterm>
      <acronym>MUA</acronym>
      <glossdef>
	<para>An application used by users to display and write email.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mac-glossary">
      <glossterm>Mandatory Access Control</glossterm>
      <acronym>MAC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mit-glossary">
      <glossterm>Massachusetts Institute of Technology</glossterm>
      <acronym>MIT</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mfc-glossary">
      <glossterm>Merge From Current</glossterm>
      <acronym>MFC</acronym>
      <glossdef subject="FreeBSD">
	<para>To merge functionality or a patch from the -CURRENT
	  branch to another, most often -STABLE.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mfh-glossary">
      <glossterm>Merge From Head</glossterm>
      <acronym>MFH</acronym>
      <glossdef subject="FreeBSD">
	<para>To merge functionality or a patch from a repository HEAD
	  to an earlier branch.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mfs-glossary">
      <glossterm>Merge From Stable</glossterm>
      <acronym>MFS</acronym>
      <glossdef subject="FreeBSD">
	<para>In the normal course of FreeBSD development, a change will
	  be committed to the -CURRENT branch for testing before being
	  merged to -STABLE.  On rare occasions, a change will go into
	  -STABLE first and then be merged to -CURRENT.</para>

	<para>This term is also used when a patch is merged from -STABLE
	  to a security branch.</para>
	<glossseealso otherterm="mfc-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="motd-glossary">
      <glossterm>Message Of The Day</glossterm>
      <acronym>MOTD</acronym>
      <glossdef>
        <para>A message, usually shown on login, often used to
	  distribute information to users of the system.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="mls-glossary">
      <glossterm>Multi-Level Security</glossterm>
      <acronym>MLS</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="madt-glossary">
      <glossterm>Multiple <acronym>APIC</acronym> Description Table</glossterm>
      <acronym>MADT</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>N</title>

    <glossentry>
      <glossterm>NAT</glossterm>
      <glosssee otherterm="nat-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>NDISulator</glossterm>
      <glosssee otherterm="projectevil-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>NFS</glossterm>
      <glosssee otherterm="nfs-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>NTFS</glossterm>
      <glosssee otherterm="ntfs-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>NTP</glossterm>
      <glosssee otherterm="ntp-glossary"/>
    </glossentry>

    <glossentry xml:id="nat-glossary">
      <glossterm>Network Address Translation</glossterm>
      <acronym>NAT</acronym>
      <glossdef>
        <para>A technique where <acronym>IP</acronym> packets are rewritten
	  on the way through a gateway, enabling many machines behind the
	  gateway to effectively share a single <acronym>IP</acronym> address.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="nfs-glossary">
      <glossterm>Network File System</glossterm>
      <acronym>NFS</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ntfs-glossary">
      <glossterm>New Technology File System</glossterm>
      <acronym>NTFS</acronym>
      <glossdef>
        <para>A filesystem developed by Microsoft and available in its
	  <quote>New Technology</quote> operating systems, such as
	  &windows2k;, &windowsnt; and &windowsxp;.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ntp-glossary">
      <glossterm>Network Time Protocol</glossterm>
      <acronym>NTP</acronym>
      <glossdef>
        <para>A means of synchronizing clocks over a network.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>O</title>

    <glossentry>
      <glossterm>OBE</glossterm>
      <glosssee otherterm="obe-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>ODMR</glossterm>
      <glosssee otherterm="odmr-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>OS</glossterm>
      <glosssee otherterm="os-glossary"/>
    </glossentry>

    <glossentry xml:id="odmr-glossary">
      <glossterm>On-Demand Mail Relay</glossterm>
      <acronym>ODMR</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="os-glossary">
      <glossterm>Operating System</glossterm>
      <acronym>OS</acronym>
      <glossdef>
	<para>A set of programs, libraries and tools that provide access to
	  the hardware resources of a computer.  Operating systems range
	  today from simplistic designs that support only one program
	  running at a time, accessing only one device to fully
	  multi-user, multi-tasking and multi-process systems that can
	  serve thousands of users simultaneously, each of them running
	  dozens of different applications.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="obe-glossary">
      <glossterm>Overtaken By Events</glossterm>
      <acronym>OBE</acronym>
      <glossdef>
	<para>Indicates a suggested change (such as a Problem Report
	  or a feature request) which is no longer relevant or
	  applicable due to such things as later changes to &os;,
	  changes in networking standards, the affected hardware
	  having since become obsolete, and so forth.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>P</title>

    <glossentry>
      <glossterm>PAE</glossterm>
      <glosssee otherterm="pae-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PAM</glossterm>
      <glosssee otherterm="pam-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PAP</glossterm>
      <glosssee otherterm="pap-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PC</glossterm>
      <glosssee otherterm="pc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PCNSFD</glossterm>
      <glosssee otherterm="pcnfsd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PDF</glossterm>
      <glosssee otherterm="pdf-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PID</glossterm>
      <glosssee otherterm="pid-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>POLA</glossterm>
      <glosssee otherterm="pola-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>POP</glossterm>
      <glosssee otherterm="pop-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>POP3</glossterm>
      <glosssee otherterm="pop3-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PPD</glossterm>
      <glosssee otherterm="ppd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PPP</glossterm>
      <glosssee otherterm="ppp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PPPoA</glossterm>
      <glosssee otherterm="pppoa-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PPPoE</glossterm>
      <glosssee otherterm="pppoe-glossary"/>
    </glossentry>

    <glossentry xml:id="pppoa-glossary">
      <glossterm><acronym>PPP</acronym> over <acronym>ATM</acronym></glossterm>
      <acronym>PPPoA</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pppoe-glossary">
      <glossterm><acronym>PPP</acronym> over <acronym>Ethernet</acronym></glossterm>
      <acronym>PPPoE</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry>
      <glossterm>PR</glossterm>
      <glosssee otherterm="pr-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>PXE</glossterm>
      <glosssee otherterm="pxe-glossary"/>
    </glossentry>

    <glossentry xml:id="pap-glossary">
      <glossterm>Password Authentication Protocol</glossterm>
      <acronym>PAP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pc-glossary">
      <glossterm>Personal Computer</glossterm>
      <acronym>PC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pcnfsd-glossary">
      <glossterm>Personal Computer Network File System Daemon</glossterm>
      <acronym>PCNFSD</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pae-glossary">
      <glossterm>Physical Address Extensions</glossterm>
      <acronym>PAE</acronym>
      <glossdef>
        <para>A method of enabling access to up to 64 GB of <acronym>RAM</acronym> on
	  systems which only physically have a 32-bit wide address space
	  (and would therefore be limited to 4 GB without PAE).</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pam-glossary">
      <glossterm>Pluggable Authentication Modules</glossterm>
      <acronym>PAM</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ppp-glossary">
      <glossterm>Point-to-Point Protocol</glossterm>
      <acronym>PPP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pointyhat">
      <glossterm>Pointy Hat</glossterm>
      <glossdef subject="FreeBSD">
	<para>A mythical piece of headgear, much like a
	  <literal>dunce cap</literal>, awarded to any &os;
	  committer who breaks the build, makes revision numbers
	  go backwards, or creates any other kind of havoc in
	  the source base.  Any committer worth his or her salt
	  will soon accumulate a large collection.  The usage is
	  (almost always?) humorous.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pdf-glossary">
      <glossterm>Portable Document Format</glossterm>
      <acronym>PDF</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pop-glossary">
      <glossterm>Post Office Protocol</glossterm>
      <acronym>POP</acronym>
      <glossdef>
        <para/>
	<glossseealso otherterm="pop3-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pop3-glossary">
      <glossterm>Post Office Protocol Version 3</glossterm>
      <acronym>POP3</acronym>
      <glossdef>
	<para>A protocol for accessing email messages on a mail server,
	  characterised by the messages usually being downloaded from the
	  server to the client, as opposed to remaining on the server.</para>
	<glossseealso otherterm="imap-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ppd-glossary">
      <glossterm>PostScript Printer Description</glossterm>
      <acronym>PPD</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pxe-glossary">
      <glossterm>Preboot eXecution Environment</glossterm>
      <acronym>PXE</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pola-glossary">
      <glossterm>Principle Of Least Astonishment</glossterm>
      <acronym>POLA</acronym>
      <glossdef>
	<para>As &os; evolves, changes visible to the user should be
	  kept as unsurprising as possible.  For example, arbitrarily
	  rearranging system startup variables in
	  <filename>/etc/defaults/rc.conf</filename> violates
	  <acronym>POLA</acronym>.  Developers consider
	  <acronym>POLA</acronym> when contemplating user-visible
	  system changes.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pr-glossary">
      <glossterm>Problem Report</glossterm>
      <acronym>PR</acronym>
      <glossdef>
        <para>A description of some kind of problem that has been
	  found in either the &os; source or documentation.  See
	  <link xlink:href="&url.articles.problem-reports;/index.html">
	  Writing &os; Problem Reports</link>.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="pid-glossary">
      <glossterm>Process ID</glossterm>
      <acronym>PID</acronym>
      <glossdef>
        <para>A number, unique to a particular process on a system,
	  which identifies it and allows actions to be taken against it.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="projectevil-glossary">
      <glossterm>Project Evil</glossterm>
      <glossdef subject="FreeBSD">
	<para>The working title for the <acronym>NDISulator</acronym>,
	  written by Bill Paul, who named it referring to how awful
	  it is (from a philosophical standpoint) to need to have
	  something like this in the first place.  The
	  <acronym>NDISulator</acronym> is a special compatibility
	  module to allow Microsoft Windows&trade; NDIS miniport
	  network drivers to be used with &os;/i386.  This is usually
	  the only way to use cards where the driver is closed-source.
	  See <filename>src/sys/compat/ndis/subr_ndis.c</filename>.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>R</title>

    <glossentry>
      <glossterm>RA</glossterm>
      <glosssee otherterm="ra-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RAID</glossterm>
      <glosssee otherterm="raid-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RAM</glossterm>
      <glosssee otherterm="ram-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RD</glossterm>
      <glosssee otherterm="rd-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RFC</glossterm>
      <glosssee otherterm="rfc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RISC</glossterm>
      <glosssee otherterm="risc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RPC</glossterm>
      <glosssee otherterm="rpc-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RS232C</glossterm>
      <glosssee otherterm="rs232c-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>RTS</glossterm>
      <glosssee otherterm="rts-glossary"/>
    </glossentry>

    <glossentry xml:id="ram-glossary">
      <glossterm>Random Access Memory</glossterm>
      <acronym>RAM</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rcs-glossary">
      <glossterm>Revision Control System</glossterm>
      <acronym>RCS</acronym>
      <glossdef>
        <para>The <emphasis>Revision Control System</emphasis>
          (<acronym>RCS</acronym>) is one of the oldest software suites
          that implement <quote>revision control</quote> for plain
          files.  It allows the storage, retrieval, archival, logging,
          identification and merging of multiple revisions for each
          file.  RCS consists of many small tools that work together.
          It lacks some of the features found in more modern revision
          control systems, like Git, but it is very simple
          to install, configure, and start using for a small set of
          files.</para>

	<glossseealso otherterm="svn-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rd-glossary">
      <glossterm>Received Data</glossterm>
      <acronym>RD</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> pin or wire that data is
	  received on.</para>
	<glossseealso otherterm="td-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rs232c-glossary">
      <glossterm>Recommended Standard 232C</glossterm>
      <acronym>RS232C</acronym>
      <glossdef>
        <para>A standard for communications between serial devices.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="risc-glossary">
      <glossterm>Reduced Instruction Set Computer</glossterm>
      <acronym>RISC</acronym>
      <glossdef>
	<para>An approach to processor design where the operations the hardware
	  can perform are simplified but made as general purpose as possible.
	  This can lead to lower power consumption, fewer transistors and in
	  some cases, better performance and increased code density.  Examples
	  of RISC processors include the Alpha, &sparc;, &arm; and
	  &powerpc;.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="raid-glossary">
      <glossterm>Redundant Array of Inexpensive Disks</glossterm>
      <acronym>RAID</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rpc-glossary">
      <glossterm>Remote Procedure Call</glossterm>
      <acronym>RPC</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rfc-glossary">
      <glossterm>Request For Comments</glossterm>
      <acronym>RFC</acronym>
      <glossdef>
	<para>A set of documents defining Internet standards, protocols, and
	  so forth.  See
	  <link xlink:href="http://www.rfc-editor.org/">www.rfc-editor.org</link>.
	  </para>

	<para>Also used as a general term when someone has a suggested change
	  and wants feedback.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="rts-glossary">
      <glossterm>Request To Send</glossterm>
      <acronym>RTS</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> signal requesting that the remote
	  system commences transmission of data.</para>
	<glossseealso otherterm="cts-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ra-glossary">
      <glossterm>Router Advertisement</glossterm>
      <acronym>RA</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>S</title>

    <glossentry>
      <glossterm>SCI</glossterm>
      <glosssee otherterm="sci-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SCSI</glossterm>
      <glosssee otherterm="scsi-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SG</glossterm>
      <glosssee otherterm="sg-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SMB</glossterm>
      <glosssee otherterm="smb-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SMP</glossterm>
      <glosssee otherterm="smp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SMTP</glossterm>
      <glosssee otherterm="smtp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SMTP AUTH</glossterm>
      <glosssee otherterm="smtpauth-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SSH</glossterm>
      <glosssee otherterm="ssh-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>STR</glossterm>
      <glosssee otherterm="str-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>SVN</glossterm>
      <glosssee otherterm="svn-glossary"/>
    </glossentry>

    <glossentry xml:id="smtpauth-glossary">
      <glossterm><acronym>SMTP</acronym> Authentication</glossterm>
      <acronym>SMTP AUTH</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="smb-glossary">
      <glossterm>Server Message Block</glossterm>
      <acronym>SMB</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="sg-glossary">
      <glossterm>Signal Ground</glossterm>
      <acronym>SG</acronym>
      <glossdef>
	<para>An <acronym>RS232</acronym> pin or wire that is the ground
	  reference for the signal.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="smtp-glossary">
      <glossterm>Simple Mail Transfer Protocol</glossterm>
      <acronym>SMTP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ssh-glossary">
      <glossterm>Secure Shell</glossterm>
      <acronym>SSH</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="scsi-glossary">
      <glossterm>Small Computer System Interface</glossterm>
      <acronym>SCSI</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="svn-glossary">
      <glossterm>Subversion</glossterm>
      <acronym>SVN</acronym>
      <glossdef>
	<para>Subversion is a version control system
          currently used by the &os; project.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="str-glossary">
      <glossterm>Suspend To <acronym>RAM</acronym></glossterm>
      <acronym>STR</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="smp-glossary">
      <glossterm>Symmetric MultiProcessor</glossterm>
      <acronym>SMP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="sci-glossary">
      <glossterm>System Control Interrupt</glossterm>
      <acronym>SCI</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>T</title>

    <glossentry>
      <glossterm>TCP</glossterm>
      <glosssee otherterm="tcp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>TCP/IP</glossterm>
      <glosssee otherterm="tcpip-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>TD</glossterm>
      <glosssee otherterm="td-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>TFTP</glossterm>
      <glosssee otherterm="tftp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>TGT</glossterm>
      <glosssee otherterm="tgt-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>TSC</glossterm>
      <glosssee otherterm="tsc-glossary"/>
    </glossentry>

    <glossentry xml:id="tgt-glossary">
      <glossterm>Ticket-Granting Ticket</glossterm>
      <acronym>TGT</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="tsc-glossary">
      <glossterm>Time Stamp Counter</glossterm>
      <acronym>TSC</acronym>
      <!-- From dg@, 20040814125503.GF40460@nexus.dglawrence.com -->
      <glossdef>
	<para>A profiling counter internal to modern &pentium; processors
	  that counts core frequency clock ticks.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="tcp-glossary">
      <glossterm>Transmission Control Protocol</glossterm>
      <acronym>TCP</acronym>
      <glossdef>
        <para>A protocol that sits on top of (e.g.) the <acronym>IP</acronym>
	  protocol and guarantees that packets are delivered in a reliable,
	  ordered, fashion.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="tcpip-glossary">
      <glossterm>Transmission Control Protocol/Internet Protocol</glossterm>
      <acronym>TCP/IP</acronym>
      <glossdef>
        <para>The term for the combination of the <acronym>TCP</acronym>
	  protocol running over the <acronym>IP</acronym> protocol.  Much of
	  the Internet runs over <acronym>TCP/IP</acronym>.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="td-glossary">
      <glossterm>Transmitted Data</glossterm>
      <acronym>TD</acronym>
      <glossdef>
	<para>An <acronym>RS232C</acronym> pin or wire that data is transmitted
	  on.</para>
	<glossseealso otherterm="rd-glossary"/>
      </glossdef>
    </glossentry>

    <glossentry xml:id="tftp-glossary">
      <glossterm>Trivial <acronym>FTP</acronym></glossterm>
      <acronym>TFTP</acronym>
      <glossdef>
        <para/>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>U</title>

    <glossentry>
      <glossterm>UDP</glossterm>
      <glosssee otherterm="udp-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>UFS1</glossterm>
      <glosssee otherterm="ufs1-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>UFS2</glossterm>
      <glosssee otherterm="ufs2-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>UID</glossterm>
      <glosssee otherterm="uid-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>URL</glossterm>
      <glosssee otherterm="url-glossary"/>
    </glossentry>

    <glossentry>
      <glossterm>USB</glossterm>
      <glosssee otherterm="usb-glossary"/>
    </glossentry>

    <glossentry xml:id="url-glossary">
      <glossterm>Uniform Resource Locator</glossterm>
      <acronym>URL</acronym>
      <glossdef>
	<para>A method of locating a resource, such as a document on
	  the Internet and a means to identify that resource.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ufs1-glossary">
      <glossterm>Unix File System Version 1</glossterm>
      <acronym>UFS1</acronym>
      <glossdef>
	<para>The original &unix; file system, sometimes called the
	  Berkeley Fast File System.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="ufs2-glossary">
      <glossterm>Unix File System Version 2</glossterm>
      <acronym>UFS2</acronym>
      <glossdef>
	<para>An extension to <acronym>UFS1</acronym>, introduced in
	  &os; 5-CURRENT.  <acronym>UFS2</acronym> adds 64 bit block
	  pointers (breaking the 1T barrier), support for extended file
	  storage and other features.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="usb-glossary">
      <glossterm>Universal Serial Bus</glossterm>
      <acronym>USB</acronym>
      <glossdef>
	<para>A hardware standard used to connect a wide variety of
	  computer peripherals to a universal interface.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="uid-glossary">
      <glossterm>User ID</glossterm>
      <acronym>UID</acronym>
      <glossdef>
        <para>A unique number assigned to each user of a computer,
	  by which the resources and permissions assigned to that
	  user can be identified.</para>
      </glossdef>
    </glossentry>

    <glossentry xml:id="udp-glossary">
      <glossterm>User Datagram Protocol</glossterm>
      <acronym>UDP</acronym>
      <glossdef>
	<para>A simple, unreliable datagram protocol which is used
	  for exchanging data on a TCP/IP network.  <acronym>UDP</acronym>
	  does not provide error checking and correction like
	  <acronym>TCP</acronym>.</para>
      </glossdef>
    </glossentry>
  </glossdiv>

  <glossdiv>
    <title>V</title>

    <glossentry>
      <glossterm>VPN</glossterm>
      <glosssee otherterm="vpn-glossary"/>
    </glossentry>

    <glossentry xml:id="vpn-glossary">
      <glossterm>Virtual Private Network</glossterm>
      <acronym>VPN</acronym>
      <glossdef>
	<para>A method of using a public telecommunication
	  such as the Internet, to provide remote access to a
	  localized network, such as a corporate
	  <acronym>LAN</acronym>.</para>
      </glossdef>
    </glossentry>
  </glossdiv>
</glossary>