(?:`)?(?:open`publication`license`v1\.0,`8`june`1999)?(?:`)?(?:`)?(?:.{,20})(?:`)?requirements`on`both`unmodified`and`modified`versions`the`open`publication`works`may`be`reproduced`and`distributed`in`whole`or`in`part,`in`any`medium`physical`or`electronic,`provided`that`the`terms`of`this`license`are`adhered`to,`and`that`this`license`or`an`incorporation`of`it`by`reference`\(with`any`options`elected`by`the`author\(s\)`and`or`publisher\)`is`displayed`in`the`reproduction\.`proper`form`for`an`incorporation`by`reference`is`as`follows:`copyright`\(c\)`<year>`by`<author`s`name`or`designee>\.`this`material`may`be`distributed`only`subject`to`the`terms`and`conditions`set`forth`in`the`open`publication`license,`vx\.`y`or`later`\(the`latest`version`is`presently`available`at`http:`www\.`opencontent\.`org`openpub`\)\.`the`reference`must`be`immediately`followed`with`any`options`elected`by`the`author\(s\)`and`or`publisher`of`the`document`\(see`section`vi\)\.`commercial`redistribution`of`open`publication\-`licensed`material`is`permitted\.`any`publication`in`standard`\(paper\)`book`form`shall`require`the`citation`of`the`original`publisher`and`author\.`the`publisher`and`author`s`names`shall`appear`on`all`outer`surfaces`of`the`book\.`on`all`outer`surfaces`of`the`book`the`original`publisher`s`name`shall`be`as`large`as`the`title`of`the`work`and`cited`as`possessive`with`respect`to`the`title\.(?:`)?(?:.{,20})(?:`)?copyright`the`copyright`to`each`open`publication`is`owned`by`its`author\(s\)`or`designee\.(?:`)?(?:.{,20})(?:`)?scope`of`license`the`following`license`terms`apply`to`all`open`publication`works,`unless`otherwise`explicitly`stated`in`the`document\.`mere`aggregation`of`open`publication`works`or`a`portion`of`an`open`publication`work`with`other`works`or`programs`on`the`same`media`shall`not`cause`this`license`to`apply`to`those`other`works\.`the`aggregate`work`shall`contain`a`notice`specifying`the`inclusion`of`the`open`publication`material`and`appropriate`copyright`notice\.`severability\.`if`any`part`of`this`license`is`found`to`be`unenforceable`in`any`jurisdiction,`the`remaining`portions`of`the`license`remain`in`force\.`no`warranty\.`open`publication`works`are`licensed`and`provided`as`is`without`warranty`of`any`kind,`express`or`implied,`including,`but`not`limited`to,`the`implied`warranties`of`merchantability`and`fitness`for`a`particular`purpose`or`a`warranty`of`non\-`infringement\.(?:`)?(?:.{,20})(?:`)?requirements`on`modified`works`all`modified`versions`of`documents`covered`by`this`license,`including`translations,`anthologies,`compilations`and`partial`documents,`must`meet`the`following`requirements:(?:`)?(?:.{,20})(?:`)?the`modified`version`must`be`labeled`as`such\.(?:`)?(?:.{,20})(?:`)?the`person`making`the`modifications`must`be`identified`and`the`modifications`dated\.(?:`)?(?:.{,20})(?:`)?acknowledgement`of`the`original`author`and`publisher`if`applicable`must`be`retained`according`to`normal`academic`citation`practices\.(?:`)?(?:.{,20})(?:`)?the`location`of`the`original`unmodified`document`must`be`identified\.(?:`)?(?:.{,20})(?:`)?the`original`author`s`\(or`authors`\)`name\(s\)`may`not`be`used`to`assert`or`imply`endorsement`of`the`resulting`document`without`the`original`author`s`\(or`authors`\)`permission\.(?:`)?(?:.{,20})(?:`)?good\-`practice`recommendations`in`addition`to`the`requirements`of`this`license,`it`is`requested`from`and`strongly`recommended`of`redistributors`that:(?:`)?(?:.{,20})(?:`)?if`you`are`distributing`open`publication`works`on`hardcopy`or`cd\-`rom,`you`provide`email`notification`to`the`authors`of`your`intent`to`redistribute`at`least`thirty`days`before`your`manuscript`or`media`freeze,`to`give`the`authors`time`to`provide`updated`documents\.`this`notification`should`describe`modifications,`if`any,`made`to`the`document\.(?:`)?(?:.{,20})(?:`)?all`substantive`modifications`\(including`deletions\)`be`either`clearly`marked`up`in`the`document`or`else`described`in`an`attachment`to`the`document\.(?:`)?(?:.{,20})(?:`)?finally,`while`it`is`not`mandatory`under`this`license,`it`is`considered`good`form`to`offer`a`free`copy`of`any`hardcopy`and`cd\-`rom`expression`of`an`open`publication\-`licensed`work`to`its`author\(s\)\.(?:`)?(?:.{,20})(?:`)?license`options`the`author\(s\)`and`or`publisher`of`an`open`publication\-`licensed`document`may`elect`certain`options`by`appending`language`to`the`reference`to`or`copy`of`the`license\.`these`options`are`considered`part`of`the`license`instance`and`must`be`included`with`the`license`\(or`its`incorporation`by`reference\)`in`derived`works\.`a\.`to`prohibit`distribution`of`substantively`modified`versions`without`the`explicit`permission`of`the`author\(s\)\.`substantive`modification`is`defined`as`a`change`to`the`semantic`content`of`the`document,`and`excludes`mere`changes`in`format`or`typographical`corrections\.`to`accomplish`this,`add`the`phrase`distribution`of`substantively`modified`versions`of`this`document`is`prohibited`without`the`explicit`permission`of`the`copyright`holder\.`to`the`license`reference`or`copy\.`b\.`to`prohibit`any`publication`of`this`work`or`derivative`works`in`whole`or`in`part`in`standard`\(paper\)`book`form`for`commercial`purposes`is`prohibited`unless`prior`permission`is`obtained`from`the`copyright`holder\.`to`accomplish`this,`add`the`phrase`distribution`of`the`work`or`derivative`of`the`work`in`any`standard`\(paper\)`book`form`is`prohibited`unless`prior`permission`is`obtained`from`the`copyright`holder\.`to`the`license`reference`or`copy\.(?:`)?(?:open`publication`policy`appendix:`\(this`is`not`considered`part`of`the`license\.\)`open`publication`works`are`available`in`source`format`via`the`open`publication`home`page`at`http:`works\.`opencontent\.`org`\.`open`publication`authors`who`want`to`include`their`own`license`on`open`publication`works`may`do`so,`as`long`as`their`terms`are`not`more`restrictive`than`the`open`publication`license\.`if`you`have`questions`about`the`open`publication`license,`please`contact`david`wiley,`and`or`the`open`publication`authors`list`at`opal@opencontent\.`org,`via`email\.`to`subscribe`to`the`open`publication`authors`list:`send`e\-`mail`to`opal\-`request@opencontent\.`org`with`the`word`subscribe`in`the`body\.`to`post`to`the`open`publication`authors`list:`send`e\-`mail`to`opal@opencontent\.`org`or`simply`reply`to`a`previous`post\.`to`unsubscribe`from`the`open`publication`authors`list:`send`e\-`mail`to`opal\-`request@opencontent\.`org`with`the`word`unsubscribe`in`the`body\.)?(?:`)?