(?:`)?(?:bsd`protection`license`february`2002)?(?:`)?(?:`)?(?:preamble`\-\-\-\-`the`berkeley`software`distribution`\(`bsd`\)`license`has`proven`very`effective`over`the`years`at`allowing`for`a`wide`spread`of`work`throughout`both`commercial`and`noncommercial`products\.`for`programrs`whose`primary`intention`is`to`improve`the`general`quality`of`available`software,`it`is`arguable`that`there`is`no`better`license`than`the`bsd`license,`as`it`permits`improvements`to`be`used`wherever`they`will`help,`without`idealogical`or`metallic`constraint\.`this`is`of`particular`value`to`those`who`produce`reference`implementations`of`proposed`standards:`the`case`of`tcp`ip`clearly`illustrates`that`freely`and`universally`available`implementations`leads`the`rapid`acceptance`of`standards`\-`often`even`being`used`instead`of`a`de`jure`standard`\(eg,`osi`network`models\)\.`with`the`rapid`proliferation`of`software`licensed`under`the`gnu`general`public`license,`however,`the`continued`success`of`this`role`is`called`into`question\.`given`that`the`inclusion`of`a`few`lines`of`gpl\-`tainted`work`into`a`larger`body`of`work`will`result`in`restricted`distribution`\-`and`given`that`further`work`will`likely`build`upon`the`tainted`portions,`making`them`difficult`to`remove`at`a`future`date`\-`there`are`inevitable`circumstances`where`authors`would,`in`order`to`protect`their`goal`of`providing`for`the`widespread`usage`of`their`work,`wish`to`guard`against`such`gpl\-`taint`\.`in`addition,`one`can`imagine`that`companies`which`operate`by`producing`and`selling`\(possibly`closed\-`source\)`code`would`wish`to`protect`themselves`against`the`rise`of`a`gpl\-`licensed`competitor\.`while`under`existing`licenses`this`would`mean`not`releasing`their`code`under`any`form`of`open`license,`if`a`license`existed`under`which`they`could`incorporate`any`improvements`back`into`their`own`\(commercial\)`products`then`they`might`be`far`more`willing`to`provide`for`non\-`closed`distribution\.`for`the`above`reasons,`we`put`forth`this`bsd`protection`license`:`a`license`designed`to`retain`the`freedom`granted`by`the`bsd`license`to`use`licensed`works`in`a`wide`variety`of`settings,`both`noncommercial`and`commercial,`while`protecting`the`work`from`having`future`contributors`restrict`that`freedom\.`the`precise`terms`and`conditions`for`copying,`distribution,`and`modification`follow\.)?(?:`)?bsd`protection`license`terms`and`conditions`for`copying,`distribution,`and`modification(?:`)?(?:\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-)?(?:`)?(?:.{,20})`definitions\.`(?:.{,20})`program`,`below,`refers`to`any`program`or`work`distributed`under`the`terms`of`this`license\.`(?:.{,20})`a`work`based`on`the`program`,`below,`refers`to`either`the`program`or`any`derivative`work`under`copyright`law\.`(?:.{,20})`modification`,`below,`refers`to`the`act`of`creating`derivative`works\.`(?:.{,20})`you`,`below,`refers`to`each`licensee\.`(?:.{,20})`scope\.`this`license`governs`the`copying,`distribution,`and`modification`of`the`program\.`other`activities`are`outside`the`scope`of`this`license;`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\.`(?:.{,20})`verbatim`copies\.`you`may`copy`and`distribute`verbatim`copies`of`the`program`as`you`receive`it,`in`any`medium,`provided`that`you`conspicuously`and`appropriately`publish`on`each`copy`an`appropriate`copyright`notice;`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\.`(?:.{,20})`modification`and`redistribution`under`closed`license\.`you`may`modify`your`copy`or`copies`of`the`program,`and`distribute`the`resulting`derivative`works,`provided`that`you`meet`the`following`conditions:`(?:.{,20})`the`copyright`notice`and`disclaimer`on`the`program`must`be`reproduced`and`included`in`the`source`code,`documentation,`and`or`other`materials`provided`in`a`manner`in`which`such`notices`are`normally`distributed\.`(?:.{,20})`the`derivative`work`must`be`clearly`identified`as`such,`in`order`that`it`may`not`be`confused`with`the`original`work\.`(?:.{,20})`the`license`under`which`the`derivative`work`is`distributed`must`expressly`prohibit`the`distribution`of`further`derivative`works\.`(?:.{,20})`modification`and`redistribution`under`open`license\.`you`may`modify`your`copy`or`copies`of`the`program,`and`distribute`the`resulting`derivative`works,`provided`that`you`meet`the`following`conditions:`(?:.{,20})`the`copyright`notice`and`disclaimer`on`the`program`must`be`reproduced`and`included`in`the`source`code,`documentation,`and`or`other`materials`provided`in`a`manner`in`which`such`notices`are`normally`distributed\.`(?:.{,20})`you`must`clearly`indicate`the`nature`and`date`of`any`changes`made`to`the`program\.`the`full`details`need`not`necessarily`be`included`in`the`individual`modified`files,`provided`that`each`modified`file`is`clearly`marked`as`such`and`instructions`are`included`on`where`the`full`details`of`the`modifications`may`be`found\.`(?:.{,20})`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\.`(?:.{,20})`implied`acceptance\.`you`may`not`copy`or`distribute`the`program`or`any`derivative`works`except`as`expressly`provided`under`this`license\.`consequently,`any`such`action`will`be`taken`as`implied`acceptance`of`the`terms`of`this`license\.`(?:.{,20})`no`warranty\.`this`software`is`provided`as`is`and`any`express`or`implied`warranties,`including,`but`not`limited`to,`the`implied`warranties`of`merchantability`and`fitness`for`a`particular`purpose`are`disclaimed\.`in`no`event`shall`the`copyright`holder,`or`any`other`party`who`may`modify`and`or`redistribute`the`program`as`permitted`above,`be`liable`for`any`direct,`indirect,`incidental,`special,`exemplary,`or`consequential`damages`arising`out`of`the`use`or`inability`to`use`the`program`\(including,`but`not`limited`to,`procurement`of`substitute`goods`or`services;`loss`of`use,`data,`or`profits;`or`business`interruption\)`however`caused`and`on`any`theory`of`liability,`whether`in`contract,`strict`liability,`or`tort,`even`if`such`holder`or`other`party`has`been`advised`of`the`possibility`of`such`damages\.