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# Creator:  Jordan Hubbard
# $FreeBSD$
#
#    **********************************************************************
#    ***                      NOTE TO COMMITTERS                        ***
#    ***                                                                ***
#    *** If you are adding a port to this list that has previously been ***
#    *** distributed, please inform portmgr@FreeBSD.org so that the     ***
#    *** distfile/packages can be removed from the FTP site.            ***
#    **********************************************************************
#
# Some of the ports in this directory have restrictive copyrights prohibiting
# their actual redistribution on mass media.  When creating compilations
# of FreeBSD on such mass media, you should be sure and NOT distribute
# the original source tarballs for such ports in your distfiles directory.
# To do so will invite needless problems from the various parties involved.
#
# Since those connected to the net will also be able to use the ports framework
# to automatically fetch their own original sources and thus complete the puzzle,
# the hardship is not as severe as it might otherwise be.
#
# Such ports are listed below:
#
# Dist          Port            Why
# ------------------------------------------------------------------------------
*-for-1.4.tgz   net/dgd-lpmud           No commercial use
*_FreeBSD_MegaCLI.zip   sysutils/megacli    Reproduction or redistribution prohibited
ASpath-tree-*.tar.gz    net-mgmt/aspathtree No commercial us
26410-800.zip       audio/libaacplus    unclear legal status, probably need licenses from 3GPP, Via Licensing and Coding Technologies
aacplusenc-*        audio/aacplusenc    unclear legal status, probably need licenses from 3GPP, Via Licensing and Coding Technologies
acroread/AdbeRdr8.* print/acroread8     Must fill out redistribution form at http://www.adobe.com/products/acrobat/distribute.html
acroread/AdbeRdr9.* print/acroread9     Must fill out redistribution form at http://www.adobe.com/products/acrobat/distribute.html
actx-*          games/actx      Contains commercial character data
adobesvg-*      graphics/linux-adobesvg Redistribution prohibited
adom-*          games/adom      Copy of CD must be sent to author
aestats-*       games/aestats       Commercial use is prohibited
agrep-*         textproc/agrep      No redistribution for profit
alephone/M1A1.zip   games/alephone-data Bungie/Microsoft do not allow charging for Marathon data files
alephone/Marathon*.zip  games/alephone-data Bungie/Microsoft do not allow charging for Marathon data files
annelid-*       games/annelid       No redistribution allowed
apache2/mod_h264_streaming-*    www/mod_h264_streaming  No commercial use
AquaGatekeeper*     net/AquaGatekeeper  No redistribution allowed
armyops*-linux.run  games/linux-americasarmy Redistribution is limited
astah-community-*.zip   devel/astah-community   License restrictions -- see http://astah.net/faq/community/enduser-license-agreement
asWedit-*       www/aswedit     Commercial software
atari800/*      emulators/atari800  xf25 contains copyright ROMs and cannot be distributed
bamg*           math/bamg       Contact author personally regarding commercial use
baudline_*      audio/baudline      No redistribution allowed
BCWipe-*        security/bcwipe     Non-commercial distribution and use only
bdc*            security/bdc        License does not allow redistribution
bicom*          archivers/bicom     Contact author personally regarding commercial use
blast*.freebsd-*    biology/blast       Must be downloaded from vendor site
boodler-*       audio/boodler       Not for commercial use
Browser*.tar.gz     net/ldapbrowser     No reply from author regarding redistribution licensing
bzip-*          archivers/bzip      Some algorithms used may infringe certain US patents.  Opinions differ.  Commercial use could render you liable to unfriendly legal action
candycruncher_demo* games/linux-candycruncher-demo  Redistribution is limited, see license
citrix_ica-*        net/citrix_ica      License prohibits redistribution
cli_freebsd*        sysutils/arcconf    May not be redistributed in binary form
clustalw-*      biology/clustalw    No commercial use
coldwar_demo*       games/linux-coldwar-demo    Redistribution is limited, see license
condor_src-*        sysutils/condor     Requires (free) registration
contool-*       sysutils/contool    Do not incorporate the source code into a product which is subsequently sold
cos-*           java/cos        Special conditions apply for commercial use
cosmo/*         games/cosmo     Possible copyright infringement
CrystalSVGforGnomeIcons* x11-themes/gnome-icons-crystal Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
cyberbit/*      x11-fonts/cyberbit-ttfonts Not free for commercial use
dansguardian-2.[678]*   www/dansguardian    Redistribution and commercial download is restricted.  Check http://dansguardian.org/index.php?page=copyright2 for more info
darwinia-demo*      games/linux-darwinia-demo   Redistribution is limited, see license
datamodeler     databases/datamodeler   Packaging prohibited by Oracle license
dbvis           java/dbvis      Redistribution is not permitted
dcl-*-C.tar.gz      science/cdcl        No commercial use
dcl-*.tar.gz        science/dcl     No commercial use
defcon*         games/linux-defcon  Redistribution is limited, see license
djbdns*         dns/djbdns      No license -- see http://cr.yp.to/softwarelaw.html
djbdns-1.05.tar.gz  mail/qmail-conf     Borrows code from djbdns, thus falls under the same restrictions as dns/djbdns
djbfft-*        math/djbfft     No license -- see http://cr.yp.to/softwarelaw.html
dlv         lang/dlv        Not sure if we can redistribute it
dmd-*           lang/dmd        No redistribution of non validated binaries
dn*.tgz         emulators/darcnes   Commercial use is restricted
dnews_*         news/dnews      Only free for schools and universities, but they have to register as well.  4 weeks of free trial for everybody We currently ask for permission to put a package on the CD-ROM
doom3-linux-*       games/linux-doom3   Redistribution is limited, see license; Requested by id Software
doom3-linux-*       games/linux-doom3-demo  Redistribution is limited, see license; Requested by id Software
doomsrc.zip     games/doom      Redistribution is limited, see license; Requested by id Software
dr_freebsd_*.zip    sysutils/megarc     Must be downloaded directly from the manufacturer
dsnake-*        games/dsnake        License prohibits any reselling
dtiquery-*      science/dtiquery    License agreement is required
eagle-lin-*.run     cad/linux-eagle5    Usage permitted for non-commercial purposes only
eawpats*        audio/eawpats       Some of the patches are not for commercial use
eClient-linux-i686.run  games/atitd     Redistribution not allowed
ecw_jpeg_2000_*.zip graphics/libecwj2   Must be downloaded manually from Ermapper site
edith*          editors/edith       Redistribution not allowed
eijiro*         japanese/eijiro-fpw The original dictionary is not free
emc2*           math/emc2       No resale, contact author for commercial usage
et-linux-*      games/linux-enemyterritory Redistribution limited
etqw*           games/linux-etqw-demo-server Redistribution limited
etqw*           games/linux-etqw-server Redistribution limited
ezmlm-*         mail/ezmlm      No license -- see http://cr.yp.to/softwarelaw.html
ezmlm-*         mail/ezmlm-idx      No license -- see http://cr.yp.to/softwarelaw.html
faac*           audio/faac      Restrictive copyright (do not sell for profit)
fasta2*         biology/fasta       May not be sold or incorporated into a commercial product
fasta3*         biology/fasta3      May not be sold or incorporated into a commercial product
festival/festlex_OALD*  audio/festlex-oald  No commercial use
festival/OGIlexicon-*   audio/festlex-ogi   No commercial use
festlex-ogi     audio/festlex-ogi   No commercial use
fmsx*/*         emulators/fmsx      Legal status of distributed ROM images unclear
foiltex*        textproc/foiltex    Redistribution on a not-for-profit basis only
fp-freebsd-ws-*     security/f-prot     Free for personal users on personal workstations only
fuse-emulator-roms* emulators/fuse-roms No explicit permission to redistribute
Opus-22.rom     emulators/fuse-roms No explicit permission to redistribute
freefonts-*     x11-fonts/freefonts Some of the fonts are shareware.  Some are freeware.  Permission must be obtained before distributing at least four (mazama.license, muriel.license, roosthea.license, shf_____.license).  Two have inconsistent licenses (tempofon.license and tempoita.license say "placed into the public domain and may [not be] sold")
freqship/*      sysutils/freqsdwn   License agreement is required to download
fretsonfire/FretsOnFire-*-linux* games/fretsonfire-data Only Unreal Voodoo site is allowed to distribute the music
fvcom/sourcecode1.tar.gz    science/fvcom   Requires (free) registration
fvcom/sourcecode1.tar.gz    science/fvcom-mpi   Requires (free) registration
gamess.*/gamess*    science/gamess      No Redistribution
giac-*          math/giacxcas       The french documentation is for non commercial only use
giftool*        graphics/giftool    Do not redistribute for profit
gishdemo-*      games/gish-demo     (c) Copyright 2004 Chronic Logic All rights reserved
glimpse-*       textproc/glimpse    Do not sell for profit
gnome2/mcitymicrogui-default* x11-themes/metacity-theme-microgui Themes may contain artwork not done by the author.  Keep FreeBSD safe if the theme author violated copyrights
GoogleEarthLinux-*  astro/google-earth  Not really sure about the redistribution terms
gorky17_demo*       games/linux-gorky17-demo    Redistribution is limited, see license
groupoffice-com-*   www/groupoffice     Free for personal use only
gsview*         print/gsview        Can only be distributed for free
hcwPVRP2.sys        multimedia/pvr250   Driver is part of the CD-ROM distribution coming with the TV card
hcwPVRP2.sys        multimedia/pvrxxx   Driver is part of the CD-ROM distribution coming with the TV card
hdb_demo*       games/linux-hdb-demo    Redistribution is limited, see license
HeroesOfMightAndMagic-* games/HeroesOfMightAndMagic Software is commercial
homard-*        french/homard       The free downloading of HOMARD software is only allowed for coupling with Code_Aster. For any other use, a license agreement is requested. Please contact HOMARD project: <homard@edf.fr>.
hplip-*-plugin.run  print/hplip-plugin  License agreement is required
httprint_freebsd_*.zip  security/httprint   No cost for personal, education and non-commercial use
huludesktop-i386.rpm    multimedia/linux-huludesktop No redistribution allowed, not for commercial use, export controlled
HyperSpec-*     devel/clisp-hyperspec   Commercial redistribution prohibited
HyperSpec-*.tar.gz  devel/clisp-hyperspec   Commercial redistribution prohibited
ICON-AquaFusion.*   x11-themes/gnome-icons-aqua-fusion Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Gentoo-Test.*  x11-themes/gnome-icons-gentoo-test Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Gnome-RH8.*    x11-themes/gnome-icons-refined Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Iris*      x11-themes/gnome-icons-iris Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Noia.*     x11-themes/gnome-icons-noia-full Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-NoiaWarm.*     x11-themes/gnome-icons-noia-warm Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Slick.*        x11-themes/gnome-icons-slick Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Snow-Apple.*   x11-themes/gnome-icons-snow-apple Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Stylish.*      x11-themes/gnome-icons-stylish Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
ICON-Ximian-South-* x11-themes/gnome-icons-ximian-south Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
j2sdkee-*       java/j2sdkee13      For development and testing use only; redistribution prohibited
jaf-*.zip       java/jaf        See the license
jai-*-lib-linux-i586.*  java/jai        Redistribution is not permitted
jai_imageio-*-lib-linux-* java/jai-imageio  Redistribution is not permitted
java3d-sdk-*-linux-i386* java/java3d        License does not allow distribution
javax_comm-*-solsparc.* comms/java-commapi  No commercial use
jdk-6*-i586.bin     java/linux-sun-jdk16    Redistribution of repackaged binaries not permitted
jdk-7*-i586.tar.gz  java/linux-sun-jdk17    Redistribution of repackaged binaries not permitted
jfbuild_src_*       games/jfsw      Must be distributed only through the Internet and free of charge
jmf-*-alljava.zip   java/jmf        Redistribution of pre-compiled binaries is not permitted
jpgraph-2.*     graphics/jpgraph2   Not for commercial use
jre-6*-i586.bin     java/linux-sun-jre16    License does not allow distribution with fee
jre-7*-i586.tar.gz  java/linux-sun-jre17    License does not allow distribution with fee
jta-*.zip       java/jta        See the license
KASH3-*         math/kash3      Not for commercial distribution or use
komodo-*        editors/komodo-edit Distribution not permitted
kye-data_nuke_levels.20121101.tar.gz games/kye  kye-data_nuke_levels is charityware
kzip-*          archivers/kzip      No redistribution allowed
l0phtcrack/*        security/l0phtcrack Parts are under GPL, so binaries should not be distributed.  Contains crypto code from OpenSSL
ladder.tar      games/ladder        Possible copyright problems
lame*           audio/lame      patent issues, see http://www.mp3licensing.com/
lgrind/*        print/lgrind        Contains non-free code written by Van Jacobson
lha-1.14i-ac*       archivers/lha-ac    No redistribution allowed
libaacplus-*        audio/libaacplus    Unclear legal status
libamrnb        audio/libamrnb      No redistribution allowed
libamrwb        audio/libamrwb      No redistribution allowed
libdvdcss-*.tar.bz2 multimedia/libdvdcss    CSS code may violate the DMCA
linux-unrealgold*   games/linux-unrealgold  Redistribution limited
linux-ut/*      games/linux-ut      Redistribution limited
linuxq3ademo-*      games/linux-quake3  Restrictive license by Loki Software
linuxq3ademo-*      games/linux-quake3-demo Restrictive license by Loki Software
linuxsampler-*      audio/linuxsampler  Commercial use is prohibited
lpac-*          audio/lpac      No commercial use
l_cc_p*_*.*.*.tar.gz    lang/icc        No redistribution allowed
l_fc_p*_*.*.*.tar.gz    lang/ifc        No redistribution allowed
macopix-*.tar.gz    games/macopix       Contains commercial character data
madfufw-*       audio/madfufw       No redistribution of firmware files
majesty_demo*       games/linux-majesty-demo    Redistribution is limited, see license
mb339pan_*      games/flightgear-mb339-pan Redistribution prohibited
mikachan-ttfonts/ver*.* japanese/mikachan-ttfonts Do not sell distfile
mindfocus-*     games/mindfocus     Contains commercial character data
mindterm-*      security/mindterm-binary Do not sell for profit
molden*         biology/molden      Free for academic, non-profit usage; do not redistribute source and executable
msql-*          databases/msql      Not free for commercial organizations
mypaedia-*      japanese/mypaedia-fpw   The original dictionary is not free
ncftpd-*        ftp/ncftpd      30 day evaluation license
nero2_linux_*       games/linux-nerogame    Freeware, but license terms are unclear
NeroDigitalAudio.zip    audio/linux-neroaaccodec Redistribution forbidden
nerolinux-*     sysutils/linux-nero Must be downloaded from their website and a serial number must be bought
NetComponents-*     java/netcomponents  No redistribution except as part of a substantially different product
ningpo_demo*        games/linux-ningpo-demo Redistribution is limited, see license
nntpcache-*     news/nntpcache      Commercial or government use requires license
nttcp-*         benchmarks/nttcp    No commercial use
ofb06trial.tgz      editors/softmaker-office  distribution with other products of any kind forbiden
OMRONWnn6.tgz       japanese/Wnn6       You should buy from Omron Software Co., Ltd.
oneko-*.tar.gz      games/oneko-sakura  Including derivatives from CARDCAPTOR SAKURA
OptimFROG*      audio/optimfrog     No commercial use
oracle/*        databases/jdbc-oracle10g    This software is under license and export controls
oracle/*        databases/jdbc-oracle11g    This software is under license and export controls
oracle/*        databases/jdbc-oracle8i This software is under license and export controls
oracle/*        databases/jdbc-oracle9i This software is under license and export controls
oracle/sqldeveloper*    databases/sqldeveloper  This software is under license and export controls
palmos-sdk-*-1.tar.gz   palm/palmos-sdk     License agreement is required
pcsv*fb.tar.gz      lang/petite-chez    User must accept license terms before installation
PDFlib-Lite-*.tar.gz    print/pdflib        Many odd restrictions on usage and distribution
platon*         biology/platon      $5000 USD for commercial users, free for academic
poseidonCE-*        java/poseidon       Redistribution is not permitted
ppsmall-*       archivers/ppunpack  No commercial redistribution
prodosemu.*     emulators/prodosemu Restrictive copyright on the ROM image
qtools-*        mail/qtools     Possibly restricted binary distribution of modified versions
quake4-linux-*      games/linux-quake4  Redistribution is limited; see the license
quake4-linux-*      games/linux-quake4-demo Redistribution is limited; see the license
Radiator/*      net/radiator        Commercial software
raknet-*        devel/raknet        Original license is Indy license, special authorization granted to provide RakNet under GPL v3
rapid-*         math/rapid      No commercial use
raproxy*.tar.gz     audio/raproxy       License allows only use in a firewall, or with RA products
rarbsd-*        archivers/rar       Only unmodified, original package can be distributed
RealPlayer-*.rpm    multimedia/linux-realplayer Redistribution not allowed
rftg-*          games/rftg      Redistribution not authorized
ricty-*         japanese/font-ricty Redistribution not allowed
ringtonetools-*     misc/ringtonetools  Not free for commercial organizations
rsmb-*          net/rsmb        Must register for account on IBM web site, must agree to license before downloading, and no redistribution allowed
savage/SFE*     games/linux-savage  Freeware, but license terms are unclear
scv-1.0p2-sysc*     cad/scv         License agreement required
seatools_cli.tar    sysutils/seatools   Distfile should be loaded by hand
serialmail-*        mail/serialmail     No license -- see http://cr.yp.to/softwarelaw.html
serious.sam*        games/linux-ssamtfe Redistribution limited
serious.sam*        games/linux-ssamtse Redistribution limited
sharefonts-*        x11-fonts/sharefonts    Shareware.  Cannot be distributed without prior authorization
shorten-*       audio/shorten       May not be sold.  May not be distributed if modified
sid-milter-*        mail/sid-milter     May incorporate intellectual property, possible patent issues
simian-*        devel/simian        Have to agree to license before download
skype*          net-im/skype        Not for redistribution
SnowIsh-*       x11-themes/gnome-icons-snowish Themes may contain artwork not done by the author.  Keep FreeBSD safe if theme author violated copyrights.
sof-*-cdrom-x86.run games/linux-sof     Redistribution is limited
speedmgmt*      net/pppoa       Not for redistribution -- see http://www.alcatel.com/consumer/dsl/disclaimer_lx.htm
squeezeboxserver-*  audio/squeezeboxserver  Contains non-redistributable firmware, documentation, and images
srd-fpw*        japanese/srd-fpw    The original dictionary is not free
stat.tar.Z      math/unixstat       License does not allow redistribution of binaries
STonX-*         emulators/stonx     Contains ROM (C) by Atari
stuffit*        archivers/stuffit   Shareware -- should not redistribute
su2-1.3.tar.gz      sysutils/su2        Do not sell for profit
susv2.tar.bz2       misc/susv2      Redistribution of the documents is not permitted
susv3.tar.bz2       misc/susv3      Redistribution of the documents is not permitted
svm_light.tar.gz    science/svmlight    The software must not be further distributed without prior permission of the author
systemc-2*.tgz      cad/systemc     License agreement required
systemsim-cell-*    emulators/linux-systemsimcell   Redistribution of pre-compiled binaries is not permitted
taetgen-*       math/tetgen     Academic or personal use only
tarsnap-*       sysutils/tarsnap    license restricts redistribution of source and binaries
tcetest_*       games/linux-enemyterritory-tce  Redistribution limited
teamspeak*      audio/teamspeak3-server No redistribution
texcm-ttf-20010117/*    x11-fonts/texcm-ttf Cannot be sold or distributed with any commercial product
TFMESS_BSP_FreeBSD_*    security/bsp_upektfmess License prohibits redistribution
thundercache        www/thundercache    Shareware license for 50 threads.  Requires license key to run more than 50 threads, which can be obtained from their website.
tinker*         biology/tinker      Distribution is prohibited
triangle-*/*        math/triangle       No commercial use without prior arrangement with the author
Tripwire-*-1.tar.gz security/tripwire-131   Cannot be redistributed for more than the cost of duplication
tripwire-*.tar.gz   security/tripwire12 Cannot be redistributed for more than the cost of duplication
TrueCrypt*      security/truecrypt  May not be redistributed.  Must accept license to download.
tuc-*           converters/tuc      Author does not allow CD-ROM distribution
twelf-*         lang/twelf      License is currently indeterminate
tw_cli-*        sysutils/tw_cli     Redistribution forbidden by license
uDrawGraph-*        graphics/uDrawGraph Binary under GNU LGPL without accompanying source
ue*dev.zip      editors/uemacs      Resale allowed for media cost only
unifi-2*/UniFi.unix.zip net-mgmt/unifi2     Redistribution of bundled firmware images is not permitted
unifi-3*/UniFi.unix.zip net-mgmt/unifi3     Redistribution of bundled firmware images is not permitted
uplink-demo*        games/linux-uplink-demo Redistribution is limited, see license
uppaal-*.zip        devel/uppaal        Downloading requires completion of a license agreement
ut2004-lnx-*        games/linux-ut2004-demo Redistribution limited
uzap.tar.gz     editors/uzap        This software may not be used to make a profit in any way.
vdr-markad-*        multimedia/vdr-plugin-markad    Installs station logos
ventrilo_srv-*      audio/ventrilo-server   May not be redistributed.  For personal use only.  Must accept license to download.
vice-*          emulators/vice      ROMs are copyrighted by Commodore Business Machines
VMware-vSphere-Perl*    net/vmware-vsphere-cli  May not be redistributed.  Must accept license to download.
vpnc-*          security/vpnc       Redistribution is not allowed if linked against OpenSSL
vst_sdk2_3.zip      audio/ardour        Redistribution of the VST PlugIns SDK is not allowed
vtkmpeg2encode.tar.gz   multimedia/vtkmpeg2encode   The MPEG2 format and all software that uses it is subject to patent restrictions
vwnc7.3.1/*     lang/visualworks    Do not redistribute
waeijiro-fpw-*      japanese/waeijiro-fpw   The original dictionary is not free
webcopy-*       www/webcopy     This program cannot be distributed if modified in any way.  Don't sell for profit without written permission
webfonts/*      x11-fonts/webfonts  Restrictive copyright
win32/*         multimedia/win32-codecs Licensing status of the codecs is unknown
WowzaMediaServerPro net/wowzamediaserverpro Redistribution not allowed
xanim-*         multimedia/xanim    Must be redistributed without fee
xchada01.lzh        games/xchadance     Contains commercial character data
xds-c-*         lang/xds-c      Redistribution is forbidden
xds-[0-9]*      lang/xds        Redistribution is forbidden
xephem-*        astro/xephem        Personal use only
XFrisk-*        games/xfrisk        Copyright/trademark violation?
XFrisk-*.tar.gz     games/xfrisk        Possible trademark infringement
xGate/*         japanese/xgate      Requested by Orangesoft Inc.
xgobi.sh.gz     math/xgobi      Restrictive copyright (do not sell for profit)
xhime*.tgz      games/xhime     Contains commercial character data
xinvaders-*     games/xinvaders     Do not sell for profit
xmame/*         emulators/xmame     Do not sell for fee
xmdiary-*       deskutils/xmdiary   Do not sell for profit
xrisk-*         games/xrisk     Possible copyright/trademark violation
xtr1.50e*       japanese/xtr        Need to obtain permission for commercial redistribution
xtris-*.tar.gz      games/xtris     Possible trademark infringement
xzx-pro-*.tar.gz    emulators/xzx       Redistribution forbidden by license
yasou-fpw*      japanese/yasou-fpw  No commercial use, and no redistribution allowed with fee except media and/or shipping cost
yEd*            graphics/yed        Must acknowledge license
zangband/*      japanese/zangband   Possible copyright infringement
zh-moettf/*     chinese/moettf      Contact Taiwan's Ministry of Education for commercial use
UrbanTerror*.zip    games/urbanterror-data  The mod files may not be sold or distributed on physical media unless with permission from id Software.