(?:`)?(?:copyright`1992,`1993,`1994`henry`spencer\.`all`rights`reserved\.)?(?:`)?this`software`is`not`subject`to`any`license`of`the`american`telephone`and`telegraph`company`or`of`the`regents`of`the`university`of`california\.`permission`is`granted`to`anyone`to`use`this`software`for`any`purpose`on`any`computer`system,`and`to`alter`it`and`redistribute`it,`subject`to`the`following`restrictions:`(?:.{,20})`the`author`is`not`responsible`for`the`consequences`of`use`of`this`software,`no`matter`how`awful,`even`if`they`arise`from`flaws`in`it\.`(?:.{,20})`the`origin`of`this`software`must`not`be`misrepresented,`either`by`explicit`claim`or`by`omission\.`since`few`users`ever`read`sources,`credits`must`appear`in`the`documentation\.`(?:.{,20})`altered`versions`must`be`plainly`marked`as`such,`and`must`not`be`misrepresented`as`being`the`original`software\.`since`few`users`ever`read`sources,`credits`must`appear`in`the`documentation\.`(?:.{,20})`this`notice`may`not`be`removed`or`altered\.