24
3.Additional information
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 been distributed under
these terms. A "work based on
the Library" means either the
Library or any derivative work
under copyright law: that is to
say, a work containing the Library
or a portion of it, either verbatim
or with 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
Library does.
1.You may copy and distribute
verbatim copies of the Library's
complete source code as you
receive it, in any medium,
provided that you
conspicuously and
appropriately publish on each
copy an appropriate copyright
notice and disclaimer of
warranty; keep intact all the
notices that refer to this
License and to the absence of
any warranty; and distribute a
copy of this License along with
the Library.
You may charge a fee for the
physical act of transferring a
copy, and you may at your option
offer warranty protection in
exchange for a fee.
2.You may modify your copy or
copies of the Library or any
portion of it, thus forming a
work based on the Library, and
copy and distribute such
modifications or work under the
terms of Section 1 above,
provided that you also meet all
of these conditions:
a)The modified work must itself
be a software library.
b)You must cause the files
modified to carry prominent
notices stating that you
changed the files and the
date of any change.
c)You must cause the whole of
the work to be licensed at no
charge to all third parties
under the terms of this
License.
d)If a facility in the modified
Library refers to a function or
a table of data to be supplied
by an application program
that uses the facility, other
than as an argument passed
when the facility is invoked,
then you must make a good
faith effort to ensure that, in
the event an application does
not supply such function or
table, the facility still
operates, and performs
whatever part of its purpose
remains meaningful.
(For example, a function in a
library to compute square roots
has a purpose that is entirely
well-defined independent of the
application. Therefore,
Subsection 2d requires that
any application-supplied
function or table used by this
function must be optional: if the
application does not supply it,
the square root function must
still compute square roots.)
These requirements apply to
the modified work as a whole. If
identifiable sections of that
work are not derived from the
Library, and can be reasonably
considered independent and
separate works in themselves,
then this License, and its
terms, do not apply to those
sections when you distribute
them as separate works. But
when you distribute the same
sections as part of a whole
which is a work based on the
Library, the distribution of the
whole must be on the terms of
this License, whose
permissions for other licensees
extend to the entire whole, and
thus to each and every part
regardless of who wrote it.
Thus, it is not the intent of this
section to claim rights or contest
your rights to work written
entirely by you; rather, the intent
is to exercise the right to control
the distribution of derivative or
collective works based on the
Library.
In addition, mere aggregation of
another work not based on the
Library with the Library (or with a
work based on the Library) on a
volume of a storage or
distribution medium does not
bring the other work under the
scope of this License.
3.You may opt to apply the terms
of the ordinary GNU General
Public License instead of this
License to a given copy of the
Library. To do this, you must
alter all the notices that refer
to this License, so that they
refer to the ordinary GNU
General Public License, version
2, instead of to this License. (If
a newer version than version 2
of the ordinary GNU General
Public License has appeared,
then you can specify that
version instead if you wish.) Do
not make any other change in
these notices.
Once this change is made in a
given copy, it is irreversible for
that copy, so the ordinary GNU
General Public License applies to
all subsequent copies and
derivative works made from that
copy.
This option is useful when you
wish to copy part of the code of
