(?:`)?(?:latex`project`public`license`lppl`version`1\.0`1999\-03\-01)?(?:`)?(?:.{,5000})`everyone`is`permitted`to`copy`and`distribute`verbatim`copies`of`this`license`document,`but`modification`is`not`allowed\.`preamble`the`latex`project`public`license`\(lppl\)`is`the`license`under`which`the`base`latex`distribution`is`distributed\.`as`described`below`you`may`use`this`license`for`any`software`that`you`wish`to`distribute\.`it`may`be`particularly`suitable`if`your`software`is`tex`related`\(such`as`a`latex`package`file\)`but`it`may`be`used`for`any`software,`even`if`it`is`unrelated`to`tex\.`to`use`this`license,`the`files`of`your`distribution`should`have`an`explicit`copyright`notice`giving`your`name`and`the`year,`together`with`a`reference`to`this`license\.`a`typical`example`would`be(?:`)?(?:%%)?(?:`)?(?:.+)(?:`)?(?:%%)?(?:`)?copyright`(?:.+)`%`this`program`can`redistributed`and`or`modified`under`the`terms(?:`)?(?:%)?(?:`)?of`the`latex`project`public`license`distributed`from`ctan(?:`)?(?:%)?(?:`)?archives`in`directory`macros`latex`base`lppl\.`txt;`either(?:`)?(?:%)?(?:`)?version`1`of`the`license,`or`\(at`your`option\)`any`later`version\.`given`such`a`notice`in`the`file,`the`conditions`of`this`document`would`apply,`with:`the`program`referring`to`the`software`pig\.`sty`and`the`copyright`holder`referring`to`the`person`m\.`y\.`name`\.`to`see`a`real`example,`see`the`file`legal\.`txt`which`carries`the`copyright`notice`for`the`base`latex`distribution\.`this`license`gives`terms`under`which`files`of`the`program`may`be`distributed`and`modified\.`individual`files`may`have`specific`further`constraints`on`modification,`but`no`file`should`have`restrictions`on`distribution`other`than`those`specified`below\.`this`is`to`ensure`that`a`distributor`wishing`to`distribute`a`complete`unmodified`copy`of`the`program`need`only`check`the`conditions`in`this`file,`and`does`not`need`to`check`every`file`in`the`program`for`extra`restrictions\.`if`you`do`need`to`modify`the`distribution`terms`of`some`files,`do`not`refer`to`this`license,`instead`distribute`the`program`under`a`different`license\.`you`may`use`the`parts`of`the`text`of`lppl`as`a`model`for`your`own`license,`but`your`license`should`not`directly`refer`to`the`lppl`or`otherwise`give`the`impression`that`the`program`is`distributed`under`the`lppl\.`the`latex`project`public`license`================================`terms`and`conditions`for`copying,`distribution`and`modification`===============================================================`warranty`========`there`is`no`warranty`for`the`program,`to`the`extent`permitted`by`applicable`law\.`except`when`otherwise`stated`in`writing,`the`copyright`holder`provides`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\.`in`no`event`unless`required`by`applicable`law`or`agreed`to`in`writing`will`the`copyright`holder,`or`any`of`the`individual`authors`named`in`the`source`for`the`program,`be`liable`to`you`for`damages,`including`any`general,`special,`incidental`or`consequential`damages`arising`out`of`any`use`of`the`program`or`out`of`inability`to`use`the`program`\(including`but`not`limited`to`loss`of`data`or`data`being`rendered`inaccurate`or`losses`sustained`by`you`or`by`third`parties`as`a`result`of`a`failure`of`the`program`to`operate`with`any`other`programs\),`even`if`such`holder`or`other`party`has`been`advised`of`the`possibility`of`such`damages\.`distribution`============`redistribution`of`unchanged`files`is`allowed`provided`that`all`files`that`make`up`the`distribution`of`the`program`are`distributed\.`in`particular`this`means`that`the`program`has`to`be`distributed`including`its`documentation`if`documentation`was`part`of`the`original`distribution\.`the`distribution`of`the`program`will`contain`a`prominent`file`listing`all`the`files`covered`by`this`license\.`if`you`receive`only`some`of`these`files`from`someone,`complain!`the`distribution`of`changed`versions`of`certain`files`included`in`the`the`program,`and`the`reuse`of`code`from`the`program,`are`allowed`under`the`following`restrictions:`(?:.{,20})`it`is`allowed`only`if`the`legal`notice`in`the`file`does`not`expressly`forbid`it\.`see`note`below,`under`conditions`on`individual`files`\.`(?:.{,20})`you`rename`the`file`before`you`make`any`changes`to`it,`unless`the`file`explicitly`says`that`renaming`is`not`required\.`any`such`changed`files`must`be`distributed`under`a`license`that`forbids`distribution`of`those`files,`and`any`files`derived`from`them,`under`the`names`used`by`the`original`files`in`the`distribution`of`the`program\.`(?:.{,20})`you`change`any`identification`string`in`the`program`to`clearly`indicate`that`the`file`is`not`part`of`the`standard`system\.`(?:.{,20})`if`the`program`includes`an`error`report`address`so`that`errors`may`be`reported`to`the`copyright`holder,`or`other`specified`addresses,`this`address`must`be`changed`in`any`modified`versions`of`the`program,`so`that`reports`for`files`not`maintained`by`the`original`program`maintainers`are`directed`to`the`maintainers`of`the`changed`files\.`(?:.{,20})`you`acknowledge`the`source`and`authorship`of`the`original`version`in`the`modified`file\.`(?:.{,20})`you`also`distribute`the`unmodified`version`of`the`file`or`alternatively`provide`sufficient`information`so`that`the`user`of`your`modified`file`can`be`reasonably`expected`to`be`able`to`obtain`an`original,`unmodified`copy`of`the`program\.`for`example,`you`may`specify`a`url`to`a`site`that`you`expect`will`freely`provide`the`user`with`a`copy`of`the`program`\(either`the`version`on`which`your`modification`is`based,`or`perhaps`a`later`version\)\.`(?:.{,20})`if`the`program`is`intended`to`be`used`with,`or`is`based`on,`latex,`then`files`with`the`following`file`extensions`which`have`special`meaning`in`latex`software,`have`special`modification`rules`under`the`license:`(?:.{,20})`files`with`extension`\.`ins`\(installation`files\):`these`files`may`not`be`modified`at`all`because`they`contain`the`legal`notices`that`are`placed`in`the`generated`files\.`(?:.{,20})`files`with`extension`\.`fd`\(latex`font`definitions`files\):`these`files`are`allowed`to`be`modified`without`changing`the`name,`but`only`to`enable`use`of`all`available`fonts`and`to`prevent`attempts`to`access`unavailable`fonts\.`however,`modified`files`are`not`allowed`to`be`distributed`in`place`of`original`files\.`(?:.{,20})`files`with`extension`\.`cfg`\(configuration`files\):`these`files`can`be`created`or`modified`to`enable`easy`configuration`of`the`system\.`the`documentation`in`cfgguide\.`tex`in`the`base`latex`distribution`describes`when`it`makes`sense`to`modify`or`generate`such`files\.`the`above`restrictions`are`not`intended`to`prohibit,`and`hence`do`not`apply`to,`the`updating,`by`any`method,`of`a`file`so`that`it`becomes`identical`to`the`latest`version`of`that`file`in`the`program\.`========================================================================`notes`=====`we`believe`that`these`requirements`give`you`the`freedom`you`to`make`modifications`that`conform`with`whatever`technical`specifications`you`wish,`while`maintaining`the`availability,`integrity`and`reliability`of`the`program\.`if`you`do`not`see`how`to`achieve`your`goal`while`adhering`to`these`requirements`then`read`the`document`cfgguide\.`tex`in`the`base`latex`distribution`for`suggestions\.`because`of`the`portability`and`exchangeability`aspects`of`systems`like`latex,`the`latex3`project`deprecates`the`distribution`of`non\-`standard`versions`of`components`of`latex`or`of`generally`available`contributed`code`for`them`but`such`distributions`are`permitted`under`the`above`restrictions\.`the`document`modguide\.`tex`in`the`base`latex`distribution`details`the`reasons`for`the`legal`requirements`detailed`above\.`even`if`the`program`is`unrelated`to`latex,`the`argument`in`modguide\.`tex`may`still`apply,`and`should`be`read`before`a`modified`version`of`the`program`is`distributed\.`conditions`on`individual`files`==============================`the`individual`files`may`bear`additional`conditions`which`supersede`the`general`conditions`on`distribution`and`modification`contained`in`this`file\.`if`there`are`any`such`files,`the`distribution`of`the`program`will`contain`a`prominent`file`that`lists`all`the`exceptional`files\.`typical`examples`of`files`with`more`restrictive`modification`conditions`would`be`files`that`contain`the`text`of`copyright`notices\.`(?:.{,20})`the`conditions`on`individual`files`differ`only`in`the`extent`of`\*modification\*`that`is`allowed\.`(?:.{,20})`the`conditions`on`\*distribution\*`are`the`same`for`all`the`files\.`thus`a`\(re\)distributor`of`a`complete,`unchanged`copy`of`the`program`need`meet`only`the`conditions`in`this`file;`it`is`not`necessary`to`check`the`header`of`every`file`in`the`distribution`to`check`that`a`distribution`meets`these`requirements\.