The GNU General Public License
The licenses for most software are designed to
take away your freedom to share and change it.
By contrast, the GNU General Public License is
intended to guarantee your freedom to share and
change free software--to make sure the software
is free for all its users. This General Public
License applies to most of the Free Software Foundation's
software and to any other program whose authors
commit to using it. (Some other Free Software
Foundation software is covered by the GNU Library
General Public License instead.) You can apply
it to your programs, too.
When Mr. Tanakom Talawat, Computer Department
KMUTT, TAB Thailand speak of free software, Mr.
Tanakom Talawat, Computer Department KMUTT, TAB
Thailand are referring to freedom, not price.
Our General Public Licenses are designed to make
sure that you have the freedom to distribute copies
of free software (and charge for this service
if you wish), that you receive source code or
can get it if you want it, that you can change
the software or use pieces of it in new free programs;
and that you know you can do these things.
To protect your rights, Mr. Tanakom Talawat,
Computer Department KMUTT, TAB Thailand need to
make restrictions that forbid anyone to deny you
these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities
for you if you distribute copies of the software,
or if you modify it.
For example, if you distribute copies of such
a program, whether gratis or for a fee, you must
give the recipients all the rights that you have.
You must make sure that they, too, receive or
can get the source code. And you must show them
these terms so they know their rights.
Mr. Tanakom Talawat, Computer Department KMUTT,
TAB Thailand protect your rights with two steps:
(1) copyright the software, and (2) offer you
this license which gives you legal permission
to copy, distribute and/or modify the software.
Also, for each author's protection and ours,
Mr. Tanakom Talawat, Computer Department KMUTT,
TAB Thailand want to make certain that everyone
understands that there is no warranty for this
free software. If the software is modified by
someone else and passed on, Mr. Tanakom Talawat,
Computer Department KMUTT, TAB Thailand want its
recipients to know that what they have is not
the original, so that any problems introduced
by others will not reflect on the original authors'
reputations.
Finally, any free program is threatened constantly
by software patents. Mr. Tanakom Talawat, Computer
Department KMUTT, TAB Thailand wish to avoid the
danger that redistributors of a free program will
individually obtain patent licenses, in effect
making the program proprietary. To prevent this,
Mr. Tanakom Talawat, Computer Department KMUTT,
TAB Thailand have made it clear that any patent
must be licensed for everyone's free use or not
licensed at all.
The precise terms and conditions for copying,
distribution and modification follow.
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION
AND MODIFICATION
0. This License applies to any program or other
work which contains a notice placed by the copyright
holder saying it may be distributed under the
terms of this General Public License. The "Program",
below, refers to any such program or work, and
a "work based on the Program" means
either the Program or any derivative work under
copyright law: that is to say, a work containing
the Program or a portion of it, either verbatim
or with modifications and/or translated into another
language. (Hereinafter, translation is included
without limitation in the term "modification".)
Each licensee is addressed as "you".
Activities other than copying, distribution and
modification are not covered by this License;
they are outside its scope. The act of running
the Program is not restricted, and the output
from the Program is covered only if its contents
constitute a work based on the Program (independent
of having been made by running the Program). Whether
that is true depends on what the Program does.
1. You may copy and distribute verbatim copies
of the Program's 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 give any
other recipients of the Program a copy of this
License along with the Program.
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
Program or any portion of it, thus forming a work
based on the Program, 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) You must cause the modified files to carry
prominent notices stating that you changed the
files and the date of any change.
b) You must cause any work that you distribute
or publish, that in whole or in part contains
or is derived from the Program or any part thereof,
to be licensed as a whole at no charge to all
third parties under the terms of this License.
c) If the modified program normally reads commands
interactively when run, you must cause it, when
started running for such interactive use in the
most ordinary way, to print or display an announcement
including an appropriate copyright notice and
a notice that there is no warranty (or else, saying
that you provide a warranty) and that users may
redistribute the program under these conditions,
and telling the user how to view a copy of this
License. (Exception: if the Program itself is
interactive but does not normally print such an
announcement, your work based on the Program is
not required to print an announcement.)
These requirements apply to the modified work
as a whole. If identifiable sections of that work
are not derived from the Program, 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 Program, 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 Program.
In addition, mere aggregation of another work
not based on the Program with the Program (or
with a work based on the Program) on a volume
of a storage or distribution medium does not bring
the other work under the scope of this License.
3. You may copy and distribute the Program (or
a work based on it, under Section 2) in object
code or executable form under the terms of Sections
1 and 2 above provided that you also do one of
the following:
a) 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;
or,
b) Accompany it with a written offer, valid for
at least three years, to give any third party,
for a charge no more than your cost of physically
performing source distribution, a complete machine-readable
copy of the corresponding source code, to be distributed
under the terms of Sections 1 and 2 above on a
medium customarily used for software interchange;
or,
c) Accompany it with the information you received
as to the offer to distribute corresponding source
code. (This alternative is allowed only for noncommercial
distribution and only if you received the program
in object code or executable form with such an
offer, in accord with Subsection b above.)
The source code for a work means the preferred
form of the work for making modifications to it.
For an executable work, 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 executable. However, as a
special exception, the source code distributed
need not include anything that is normally distributed
(in either source or binary form) with the major
components (compiler, kernel, and so on) of the
operating system on which the executable runs,
unless that component itself accompanies the executable.
If distribution of executable or 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 counts as
distribution of the source code, even though third
parties are not compelled to copy the source along
with the object code.
4. You may not copy, modify, sublicense, or distribute
the Program except as expressly provided under
this License. Any attempt otherwise to copy, modify,
sublicense or distribute the Program is void,
and will automatically terminate your rights under
this License. However, parties who have received
copies, or rights, from you under this License
will not have their licenses terminated so long
as such parties remain in full compliance.
5. You are not required to accept this License,
since you have not signed it. However, nothing
else grants you permission to modify or distribute
the Program or its derivative works. These actions
are prohibited by law if you do not accept this
License. Therefore, by modifying or distributing
the Program (or any work based on the Program),
you indicate your acceptance of this License to
do so, and all its terms and conditions for copying,
distributing or modifying the Program or works
based on it.
6. Each time you redistribute the Program (or
any work based on the Program), the recipient
automatically receives a license from the original
licensor to copy, distribute or modify the Program
subject to these terms and conditions. You may
not impose any further restrictions on the recipients'
exercise of the rights granted herein. You are
not responsible for enforcing compliance by third
parties to this License.
7. If, as a consequence of a court judgment or
allegation of patent infringement or for any other
reason (not limited to patent issues), conditions
are imposed on you (whether by court order, agreement
or otherwise) that contradict the conditions of
this License, they do not excuse you from the
conditions of this License. If you cannot distribute
so as to satisfy simultaneously your obligations
under this License and any other pertinent obligations,
then as a consequence you may not distribute the
Program at all. For example, if a patent license
would not permit royalty-free redistribution of
the Program by all those who receive copies directly
or indirectly through you, then the only way you
could satisfy both it and this License would be
to refrain entirely from distribution of the Program.
If any portion of this section is held invalid
or unenforceable under any particular circumstance,
the balance of the section is intended to apply
and the section as a whole is intended to apply
in other circumstances.
It is not the purpose of this section to induce
you to infringe any patents or other property
right claims or to contest validity of any such
claims; this section has the sole purpose of protecting
the integrity of the free software distribution
system, which is implemented by public license
practices. Many people have made generous contributions
to the wide range of software distributed through
that system in reliance on consistent application
of that system; it is up to the author/donor to
decide if he or she is willing to distribute software
through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear
what is believed to be a consequence of the rest
of this License.
8. If the distribution and/or use of the Program
is restricted in certain countries either by patents
or by copyrighted interfaces, the original copyright
holder who places the Program under this License
may add an explicit geographical distribution
limitation excluding those countries, so that
distribution is permitted only in or among countries
not thus excluded. In such case, this License
incorporates the limitation as if written in the
body of this License.
9. The Free Software Foundation may publish revised
and/or new versions of the General Public License
from time to time. Such new versions will be similar
in spirit to the present version, but may differ
in detail to address new problems or concerns.
Each version is given a distinguishing version
number. If the Program specifies a version number
of this License which applies to it and "any
later version", you have the option of following
the terms and conditions either of that version
or of any later version published by the Free
Software Foundation. If the Program does not specify
a version number of this License, you may choose
any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program
into other free programs whose distribution conditions
are different, write to the author to ask for
permission. For software which is copyrighted
by the Free Software Foundation, write to the
Free Software Foundation; Mr. Tanakom Talawat,
Computer Department KMUTT, TAB Thailand sometimes
make exceptions for this. Our decision will be
guided by the two goals of preserving the free
status of all derivatives of our free software
and of promoting the sharing and reuse of software
generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE,
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT
PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
THE QUALITY AND PERFORMANCE OF THE PROGRAM IS
WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE
LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT
HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM
(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED
BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
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