CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.cpdl.org",cType: 'managed',cRay: '917d4f095b94a198',cH: 'hPwCdvvYdCH8u0lbFhr5u_Md854boOZOExH_127STVI-1740545368-1.2.1.1-wBWLOQ0yjyfE4_Pbhoq1JKNw0TsYr7p4IbTRXQ4Sx1H7dxYdbj3EPqYIv1DLY_YG',cUPMDTk: "\/wiki\/index.php\/John_Fawcett?__cf_chl_tk=QXH9ocfaaa0HwQn_CXQUcqB_YeOuCkh0g44sRpWPM28-1740545368-1.0.1.1-lT8HDVeQVH2io8T7rEWSAZ0P7D2X9AkSI.okb0kvd3U",cFPWv: 'b',cITimeS: '1740545368',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/wiki\/index.php\/John_Fawcett?__cf_chl_f_tk=QXH9ocfaaa0HwQn_CXQUcqB_YeOuCkh0g44sRpWPM28-1740545368-1.0.1.1-lT8HDVeQVH2io8T7rEWSAZ0P7D2X9AkSI.okb0kvd3U",md: "DEdxg1wpUmuO8zZFMjp9IRDnEtKNvyPjs7xXvYZ8l2Y-1740545368-1.2.1.1-9BVK77d2cVtvtkmogyABGbd0MOR3UnSgIBQZeAoU6QP6E0eP2XoZX1ybHgJEhX_jqUQn744XhDUgQCZS89bmf6RyS4cokDk0YGpUYCM.gXKe7CB4dJKWoVwiB9y2Eqh_CXhs32dWgSYSx6PLF65EH.FPVO7cqfiikiPy2_amPiWGt5azPXcZfLfu8SnYdfOV4qQGdzin_rtxjBoPaRXZGyQiQCZGF2ciSIXlddhxM7P2Lo.QPxXrDzXtBn1QEplHIBbfQbgqQRDGv5VKOViCYyLyDjMdBxoS3q0GfcGHvxUHL7d8ualftoX82wqDZ8Hw_e7ckwRbem7nYki8xWF2cZ7mnEdaALohGmTdlFMQuL1CtF0vEPtaJ8bdilaKLh._zSonHGqbejHjJx4TFujYRowAlpiXMqxsgTVhsFAr4xftXWx.4QEOca7OPjxpo1l6ViT36NyOZxPKGseywTdquRvG5JShdCnmdFfvgfj6vnFBhErl_HLiMZ2_XQhHJJh41MgIC1BAO2fK.9pqAqzTxNP.nONmcxusU.80sWaWHIi.kc.AU1s1z93_.i1Vb9pYOIp64BNLaTupj0uKI9ynvgsvKEzk.zCSvhsMqsIIOH_KWog8VEKOPkZPzF9dPlePjFK6wDOYJOrJxtppZEGzhndPd99v3cA5AdNUrC1IycRSgXj9oKN7sAWd7ZFArHDzafKNZuraRclRmF9kwxl3qmH50qSo9W_KWLoXo9_gRrzE58.lANbwYTdEVkN1m5I8k6TstPdOztrFmkw5HxY1wzCRiSN5rMKEXPQiHmn1nDjiNp2Tv1EKM0xSJGAAH3SUNidVtsCLFxlSkefLWwoyCtigEu0FtU75bPOK6SQRZZfRDs7eRNegi1oc7zPdZHpvVAFW7FM1LpOXVbxbuQ3yOOCNjZt.zSYnIKUSic1FHkmrmvzt.vmY.Lo4OykE51T8ElG1ervPBF9c6kpoNTaZI4FhcoEy6IPIdkN2KCljT50I9Bm4Jq7GYU8lhNP6cATYuAto8cnpIT3iEnyr2P1MrlJc9kZ0DYzigSQfbhiq6vbvo9XO__kMQHLi05E5hIx5hIH63v2dQMvDPZ8_NbtU4c9RXcUwBsds5pikA.TIVHrD4OfaZR1QSMCdizBXAkF8ImSHVe.VVbamX_SLfwsZRStdvMV04vwjlc.wPDn1n0mNmGl.aUEhh76qqcs1NwPNmyBhnYRJ9k6TneWv02zh9ECkRryYDDhTTjAqFOfvi2oQImIRL7tEpDDekCR2FWjkPb203RK4lZMUswEcYGOte.8SmB8OizDM39uGV_LHzwrKhC5E8_6arXrBfm9toBDvjfQHx7Tpi50zIM5sIENK8407GP8jRA1ZZBYiwXi34NHhJslQxHI5_pw_7f.VBN2pltWccsDV0G5_RPWIvhuzcQLXDTuI7BH20Mbvh.9B0BkDWhe.J1BD1wnLYa.mliGDhv06XT0fwWKezVCcCJdKdOuJA3OCbKmHdttAiCYjFrjC.fV_k9EUPWIlq6mJNRsylaQHfMROkk55fEZKnP_LECDNBSVC.frMJ_MWyZMk74VxQHZL9VA9M0aDqO7Q.5jdkEK8r1bd1EYZj8DOJMwbZuLbh.mCagYOu4Lk7EgB_vHUpi2LHYktNQh5KxxSBs8RhPQcrBjh5ueJGYlpy9Q01oxrWBwSb7Gb2mKN7K73atpBBB0ElqiuyzzygNSGGy.401LXDkeeJqAy2d92P4GKB1yGtnB_LJWk3puV1fXsAZv.Q7uNJiKnTQ9jtGRbS0h7IyyGa35Fw4cXONVnsv3XAFg0HyAcng54ElQ38dH0aFs2u1gaPi3LJyptmL51pHLUTp7Eyw9zG6byNftHHDBzOnX770kg3XLqbtyNTe4PZafk59jeR9HfQwvYsg9FbvyYsNKS6tvzc5RpxOb8ynM7GujZmmzyPQzBN1_94n75vhxHmLEkxK_vl.2cRLrztb9DmFolcZ78dCPOTlJv7RLJaIsQkanyI0oCBpYRfQ9gvZeBi7TV5ghWKvaIOjHBBYNMf_MJNZ95Gf14CHA9ON2ZItvU7MX45bPc2_v1BvC4i0aoe5.6sg1OLtYh2eQSA8lVVxxwzdig_Dyw6ZCsd6vCGGr2SNxlQ2qLWKoGwq7SKac.G1jaz430yJCerdlF1PH.EazFWXC4xRIyIyxmB_mf0urPoCCtfXp0.q2NIZw2RxC0__OSv_hI_3k9t0w0XYXdROcwTdq_b6Xw3a_m7kCfmJSjiUCzje5nlrwappQU3ewTGVh._9zDJRXeMed1ZrhRehqNvbp6Cc7Kpr5p6NO0_cHul9qF_9kOq5oi3SacJb431IwOnDr3H7xrW9yeHAVy_ICLA7Yuf6BYmyb6E2iJIVI2KmjE9lPRRZcNhCVnU.jZrrhSKPnGe6vo8HCuHnFi",mdrd: "HGQ2tQzvHBTxHbyXoFOT4b9Abhp97WRBY_d3uBPhXJ4-1740545368-1.2.1.1-rHAwDbvk12Jxe3MUFR14ote20HAOnruq.82PgZDg1cFaAslt8ZsxduP7YjnaSrzCrx1ui.hq5gvwftlMpD7i_jzOVGKU1w0RlNpXUII8VL7tA589ijPUWHABmH9BweIBx629dMaokTxAydIY0eragnRbIR8_TmRFNdJ7HspJfcP0iMC6.72.feix8CyI4jVIhdzcAzt4ZVTSe9ih1vhnUtISGP6a4UNwqrG2.9tI_a5JX2z.rxueka4ZTDuMdxfOU76TuVHp33hQ21ALnfZ349jXNMClPz3plgUSM4.aWfmuaykN5EOOT.TpOGw64K6RUhEc4bPj9K.GemUWSz6F8xivdJrHOyBlncB3uRPryUl2.dVyqLkOGsu_MGD0W_VJOJGTQM3oJt.mqX37pzM.S8bDy5qa25EA0EMd1XJdXFK5BgbK5Hq0gnF_ZHjf8NZOYl2AQDpJ_QqnssTXQhcGIJOzS6aow1X_.Mr.4YPNCZeTHSjsk7mgud4JhgROCBkl2XAra_8fzkTAKCZaFOrIp_LCiGDJ3PPGeuzQCeNlTXb4NLAZhSIAtpQYdv5TFrAE4Q6T1wQdopeRTcTx5NVzHaK8L_NvOS_XqSPunyYU6BQ3LmftK80VIIUBCfZF4CUw_o969gfgReWfhAbMr0PvIvwVftKpM52GX3L9bpANwR8gzt08rtCsCkzpOayok2DXD5baL98FitoijgQCwTH1Z.Hu604FNgjbuiMLxMv84yL_G1ypkqOO1ZmA639_NknVQp2rMG9nEoIXp3RLVyGJtvHHKI7HDJcJ_VpPq8gb3GAWPoEaUPqt7zPO2ocGJ0Ax_IeYQrv83OeCj9uZq9e4ickfn16HsNuyelOPbvbwFp4_XXjecKyjECoVu4.NafbkKA.iBIaqldYibsjAIevHMgPhL_R.gKhk2vfVvGU2E4eqFCu1jfTFMH5Ax9Uof4yRBrT_Z2k9iJnsjHW53gJ6hCbLHdPmNIOf8wTbjFV7HYXfJXHlnBM7WA_QHqG8p22.EviMlNKmP_pUSOLcPC0tKpsgfru.Boy3gVNjcE_28KnhikQRQWVrvGPHH80RMFGEXr1N3xo8NbRK1nhTiIm2j3_d2ejwaZMdbdK_0deGrfdSy6vev9VbJbDlom_fK0D9xr5_qXFLvk350ju8BOo6iXLau94u7ep.mLbVY.uldcbBze.DCEs9dCzcdHaf_cCtUQd5nMOa55XERCI_yEoAGAv.EVE_BQ7OX.yC7xybrNycVw_ISDPjVjZ8sybwt.VusVFMNP5ldHC2PfWNyvLNOr1lFKz8l24aiTO1tPFRHBI3wfTSWohBL5TTfrwDG0xbWILI9FazxIolxI814nxN2KzQ9Hjo5grU6JTvCyK1S._WNi.GPLDfoI93WcP3qKO_AoNRqA.Sieql8Xs6jaP2vimwDMT2HzN8wpcCM9eKLyO.53d6_n.eyva_MxPhMeRzKeGy_i6wjsEQaswf3sbMnfcE5EERqNa8rLBqhK.0scIZ3s1E0m8LxvIrDq5VJQ4uu3E5rdX7cflFNOd5B0NBe8q69V.sQ4aH_r.liVprH2nibiE8e1Y3frpJWVUQ9Q5dP56QiAIQ8sd.iwCtfYFp6TtSb7Bu2zfd2MESmgpigEth4IaBsJnz8RSjffrAwdkXYpSW3WPaCa3V_0FqIJ3GpBgMxsTcAYjrf1TRoWLBQNY9GcZrIvmTK5VNYppfWbyHi951aIaUam1IhcoNdVJjX50i1NbKhZ6z7Ln1_W7pChOVzpKcuBE_B9jeGLt_rvHrp6tn1EinQjfdKQLW3FfiAI94Dn2xKlhjxmNzXV9C9_fW4EyTbB5q5PbLM10XXJ4kf9osv7FE5srGL.BP0.jUZo7Eaz5repog10gPj3qnlGKnQyXZhTUTglCb7JekM8QzEyZzzz.szqOxkK7WuejaA.3AEqtObdskJqcPuzzjtjP05YjcmZXb4BaQFTg88B3M"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=917d4f095b94a198';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/wiki\/index.php\/John_Fawcett?__cf_chl_rt_tk=QXH9ocfaaa0HwQn_CXQUcqB_YeOuCkh0g44sRpWPM28-1740545368-1.0.1.1-lT8HDVeQVH2io8T7rEWSAZ0P7D2X9AkSI.okb0kvd3U" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>