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therefore permits such linking only if
the entire combination fits its criteria of
freedom. The Lesser General Public
License permits more lax criteria for
linking other code with the library.
We call this license the "Lesser"
General Public License because it
does Less to protect the user's
freedom than the ordinary General
Public License. It also provides other
free software developers Less of an
advantage over competing non-free
programs. These disadvantages are
the reason we use the ordinary
General Public License for many
libraries. However, the Lesser license
provides advantages in certain special
circumstances.
For example, on rare occasions, there
may be a special need to encourage
the widest possible use of a certain
library, so that it becomes a de-facto
standard. To achieve this, non-free
programs must be allowed to use the
library. A more frequent case is that a
free library does the same job as
widely used non-free libraries. In this
case, there is little to gain by limiting
the free library to free software only, so
we use the Lesser General Public
License.
In other cases, permission to use a
particular library in non-free programs
enables a greater number of people to
use a large body of free software. For
example, permission to use the GNU C
Library in non-free programs enables
many more people to use the whole
GNU operating system, as well as its
variant, the GNU/Linux operating
system.
Although the Lesser General Public
License is Less protective of the users'
freedom, it does ensure that the user of
a program that is linked with the Library
has the freedom and the wherewithal to
run that program using a modified
version of the Library.
The precise terms and conditions for
copying, distribution and modification
follow. Pay close attention to the
difference between a "work based on
the library" and a "work that uses the
library". The former contains code
derived from the library, whereas the
latter must be combined with the library
in order to run.
TERMS AND CONDITIONS FOR
COPYING, DISTRIBUTION AND
MODIFICATION
0. This License Agreement applies to
any software library or other program
which contains a notice placed by the
copyright holder or other authorized
party saying it may be distributed under
the terms of this Lesser General Public
License (also called "this License").
Each licensee is addressed as "you".
A "library" means a collection of
software functions and/or data
prepared so as to be conveniently
linked with application programs (which
use some of those functions and data)
to form executables.
The "Library", below, refers to any such
software library or work which has
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either the Library or any derivative work
under copyright law: that is to say, a
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modifications and/or translated
straightforwardly into another language.
(Hereinafter, translation is included
without limitation in the term
"modification".)
"Source code" for a work means the
preferred form of the work for making
modifications to it. For a library,
complete source code means all the
source code for all modules it contains,
plus any associated interface definition
files, plus the scripts used to control
compilation and installation of the
library.
Activities other than copying,
distribution and modification are not
covered by this License; they are
outside its scope. The act of running a
program using the Library is not
restricted, and output from such a
program is covered only if its contents
constitute a work based on the Library
(independent of the use of the Library
in a tool for writing it). Whether that is
true depends on what the Library does
and what the program that uses the
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