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[[!meta copyright="Copyright © 2007, 2008 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled
[[GNU Free Documentation License|/fdl]]."]]"""]]
A principal is an accountable entity. A principal may be
a user. On some computer systems, users are represented by their
respective UID. A process may also be a principal. However, a
principal may span multiple processes (a web request that causes
a CGI script to be invoked) or a principal may contain a number
of separate principals (a web server serves multiple requests,
each request represents a different principal).
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