Owner's Manual

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
the
Library
into a
program
that
is
not a
library.
4.
You
may
copy
and
distribute the
Library
(or a portion or
derivative
of
it,
under
Section
2)
in
object
code
or
executable
form
under
the terms of
Sections
1
and
2
above
provided
that
you
accompany
it with the
complete
corresponding
machine-readable
source
code,
which
must
be
distributed
under
the
terms
of
Sections
1
and
2
above
on
a
medium
customarily
used
for software
interchange.
If
distribution of
object
code
is
made
by
offering
access
to
copy
from
a
designated
place,
then
offering
equivalent
access
to
copy
the
source
code
from
the
same
place
satisfies the
requirement
to distribute
the
source
code,
even
though
third
parties
are
not
compelled
to
copy
the
source
along
with the object
code.
5.
A
program
that
contains
no
derivative
of
any
portion of
the
Library,
but
is
designed
to work with
the
Library
by
being
compiled
or
linked
with it,
is
called
a "work
that
uses
the
Library'~
Such
a
work,
in
isolation,
is
not a
derivative
work of
the
Library,
and
therefore
falls
outside
the
scope
of this
License.
However,
linking
a
"work
that
uses
the
Library"
with the
Library
creates
an
executable
that
is
a
derivative
of
the
Library
(because
it
contains
portions of
the
Library),
rather
than
a
"work
that
uses
the
library'~
The
executable
is
therefore
covered
by
this
License.
Section
6 states terms for distribution of
such
executables.
When
a
"work
that
uses
the
Library"
uses
material
from
a
header
file
that
is
part of the
Library,
the
object
code
for the work
may
be
a
derivative
work of
the
Library
even
though
the
source
code
is
not.
Whether this
is
true
is
especially
significant
if
the work
can
be
linked
without
the
Library,
or if
the
work
is
itself a
library.
The
threshold
for
this to
be
true
is
not
precisely
defined
by
law.
If
such
an
object file
uses
only
numerical
parameters,
data
structure
layouts
and
accessors,
and
small
macros
and
small
inline
functions (ten
lines
or
less
in
length),
then
the
use
of
the
object
file
is
unrestricted,
regardless
of whether it
is
legally
a
derivative
work.
(Executables
containing
this
object
code
plus
portions of the
Library
will still fall
under
Section
6.)
Otherwise,
if
the
work
is
a
derivative
of the
Library,
you
may
distribute the object
code
for
the
work
under
the
terms of
Section
6.
Any
executables
containing
that work
also
fall
under
Section
6,
whether or not they
are
linked
directly with the
Library
itself
6.
As
an
exception
to the
Sections
above,
you
may
also
combine
or
link
a
"work
that
uses
the
Library"
with
the
Library
to
produce
a work
containing
portions of
the
Library,
and
distribute that work
under
terms of
your
choice,
provided
that the terms permit modification of the work for the
customer's
own
use
and
reverse
engineering
for
debugging
such
modifications.
You
must
give
prominent
notice
with
each
copy
of
the
work that the
Library
is
used
in
it
and
that
the
Library
and
its
use
are
covered
by
this
License.
You
must
supply
a
copy
of this
License
. If
the work
during
execution
displays
copyright
notices,
you
must
include
the
copyright
notice
for
the
Library
among
them,
as
well
as
a
reference
directing the
user
to the
copy
of this
License.
Also,
you
must
do
one
of
these
things:
a)
Accompany
the work with the
complete
corresponding
machine-readable
source
code
for the
Library
including
whatever
changes
were
used
in
the
work
(which
must
be
distributed
under
Sections
1
and
2
above);
and,
if the work
is
an
executable
linked
with
the
Library,
with
the
complete
machine-readable
"work
that
uses
the
Library';
as
object
code
and/or
source
code,
so
that the
user
can
modify the
Library
and
then
relink
to
produce
a
modified
executable
containing
the
modified
Library
.
(It
is
understood
that the
user
who
changes
the
contents of definitions
files
in
the
Library
will not
necessarily
be
able
to
recompile
the
application
to
use
the
modified
definitions.)
b)
Use
a
suitable
shared
library
mechanism
for
linking
with
the
Library.
A
suitable
mechanism
is
one
that (1)
uses
at
run
time a
copy
of
the
library
already
present
on
the
user's
computer
system,
rather
than
copying
library functions into
the
executable,
and
(2) will
operate
properly
with a
modified
version
of
the
library,
if
the
user
installs
one,
as
long
as
the
modified
version
is
interface-compatible with the
version
that
the
work
was
made
with.
c)
Accompany
the work with a written
offer,
valid
for at
least
three
years,
to
give
the
same
user
the
materials
specified
in
Subsection
6a,
above,
for a
charge
no
more
than
the
cost
of performing this distribution.
d)
If
distribution of
the
work
is
made
by
offering
access
to
copy
from
a
designated
place,
offer
equivalent
access
to
copy
the
above
specified
materials
from
the
same
place.
e)
Verify
that
the
user
has
already
received
a
copy
of
these
materials
or that
you
have
already
sent
this
user
a
copy.
For
an
executable,
the
required
form of the
"work
that
uses
the
Library"
must
include
any
data
and
utility
programs
needed
for
reproducing
the
executable
from
it.
However,
as
a
special
exception,
the
materials
to
be
distributed
need
not
include
anything
that
is
normally
distributed
(in
either
source
or
binary
form) with
the
major
components
(compiler,
kernel,
and
so
on)
ofthe
operating
system
on
which
the
executable
runs,
unless
that
component
itself
accompanies
the
executable.
7