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COPYING.CB
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1992-08-12
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This is file "copying.cb".
This document describes the terms for distributing the source code of and any
derived work based on the LIBGRX graphics library. Such source code is marked
with the copyright notice:
"Copyright (c) 1992 Csaba Biegl, 820 Stirrup Dr, Nashville, TN 37221"
Source code copyright Csaba Biegl is distributed under the following terms:
(1) The event queue library (code in the 'events' sub-directory of the
archive), the test programs for the graphics library (code in the
'test' sub-directory) is distributed without restrictions. This code
is free for use in commercial, shareware or freeware applications.
(2) The LIBGRX graphics library is distributed under the terms of the
GNU GPL (General Public License) with the following amendments:
a) If an application derived from the library is distributed under the
terms of the GNU GPL then the author(s) of the application can use the
graphics library according to the terms of the GNU GPL.
b) If an application derived from the library is distributed free of
charge in executable format only, then the LIBGRX library can be used
free of charge. However, the author(s) of the application should
include information about the fact that the LIBGRX library was used
to create the application. Additionally, the program must be
accompanied with information as to where the source code of the
library may be obtained.
c) If an application derived from the library is distributed in
executable format only for a fee (this includes shareware applications
as well) then a one-time license fee of $100 must be paid to
Csaba Biegl, 820 Stirrup Dr, Nashville, TN 37221.
d) If none of the above terms is acceptable, contact me for special
arrangements.
(3) Parts of this code were derived from source code copyrighted:
"Copyright (C) DJ Delorie, 24 Kirsten Ave, Rochester NH. 03867-2954".
Such code falls under the original copyright. A copy of the file
"COPYING.DJ" is included with this document. If you did not receive
a copy of "COPYING.DJ", you may obtain one from where this document
was obtained, or by writing to:
DJ Delorie
24 Kirsten Ave
Rochester NH 03867-2954
USA
(4) Graphics drivers (even the new ones) are distributed under the terms
described in "COPYING.DJ".
(5) Fonts (in the 'fonts' directory) are distributed according to the
terms in the file "COPYING.MIT". Most of the fonts included with the
LIBGRX library were derived from fonts in the MIT X11R4 distribution.
The exception is the "pc" BIOS font family, which is distributed
without restrictions.
(6) The 8514/A graphics driver and some 8514/A specific low-level library
library functions were derived from code published in "Graphics
Programming for the 8514/A" by Jake Richter and Bud Smith.
(M&T Publishing Inc., 1990) See the file "./src/reg8514a.h" for
further copyright details.
(7) Donations are always welcome.
"Derived application" is defined as an application linked with any module
from the LIBGRX graphics library.
A copy of the GNU GPL (int the file "COPYING") is included with this document.
If you did not receive a copy of "COPYING", you may obtain one from where
this document was obtained, or by writing to:
Free Software Foundation
675 Mass Ave
Cambridge, MA 02139
USA
The spirit of the above copyright is as follows: The preferred way to
distribute any work derived from the graphics library is under the GNU
GPL, with full source code. However, the copyright also tries to
accommodate the needs of users who prefer not to distribute their sources
and/or want to generate commercial applications.
If, by some random chance, you decide to take paragraph #7 above
(about the donations) seriously, don't forget about: DJ Delorie (address
above), without whom we still would be paying $500+ for a probably
inferior 32 bit protected mode DOS C compiler, the folks at the FSF
(address above) who brought you GCC, and the folks at Berkeley who are
mainly responsible for the C run-time library in DJGPP. Their address:
Computer Systems Research Group
Computer Science Division, EECS
University of California
Berkeley, California 94720
USA