PageSourceSearch

https://elkos.gr/contact/

html elkos.gr collected 2026-10-07 16:07:44 UTC 42,232 bytes, 14 lines download raw bytes

1<!doctype html><html lang=en dir=auto data-theme=dark><head><meta charset=utf-8><meta http-equiv=X-UA-Compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1,shrink-to-fit=no"><meta name=robots content="index, follow"><title>Contact | Eleftherios Kosmas</title><meta name=keywords content><meta name=description content="Contact Eleftherios Kosmas for feedback, collaboration, corrections, or questions about the EEG and sleep reference tools on elkos.gr."><meta name=author content="Eleftherios Kosmas"><link rel=canonical href=https://elkos.gr/contact/><link crossorigin=anonymous href=/assets/css/stylesheet.a9a28335204d54fce54fa0ba7c5cf458b8cbdcb3acb5d9e6b81d3f6f40c6b971.css integrity="sha256-qaKDNSBNVPzlT6C6fFz0WLjL3LOstdnmuB0/b0DGuXE=" rel="preload stylesheet" as=style><link rel=icon href=https://elkos.gr/favicon.ico><link rel=icon type=image/png sizes=16x16 href=https://elkos.gr/favicon-16x16.png><link rel=icon type=image/png sizes=32x32 href=https://elkos.gr/favicon-32x32.png><link rel=apple-touch-icon href=https://elkos.gr/apple-touch-icon.png><link rel=mask-icon href=https://elkos.gr/safari-pinned-tab.svg><meta name=theme-color content="#2e2e33"><meta name=msapplication-TileColor content="#2e2e33"><link rel=alternate hreflang=en href=https://elkos.gr/contact/><link rel=alternate hreflang=el href=https://elkos.gr/el/contact/><noscript><style>#theme-toggle,.top-link{display:none}</style></noscript>
1<script>localStorage.getItem("pref-theme")==="light"&&(document.querySelector("html").dataset.theme="light")</script>
1<style>:root[data-theme=light]{--theme:#f4f0e8;--entry:#ebe7df;--primary:#6b4c2a;--content:#2d2d2d;--secondary:#4f463a;--border:#c8c0b0;--tertiary:#d8d0c0;--code-bg:#e8e4dc;--code-block-bg:#e2ded3}:root[data-theme=dark]{--theme:#0d0a06;--entry:#1a150d;--primary:#ffb000;--content:#ccb88a;--secondary:#9a8862;--tertiary:#2a2010;--border:#3a2e18;--code-block-bg:#140f08;--code-bg:#1f180e;color-scheme:dark}:root[data-theme=dark] body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:9999;background:repeating-linear-gradient( 0,transparent,transparent 2px,rgba(0,0,0,6%) 2px,rgba(0,0,0,6%) 4px ),radial-gradient( ellipse at center,transparent 60%,rgba(0,0,0,.35) 100% )}:root[data-theme=dark] .profile_inner>span::after{content:"▌";animation:blink-cursor 1s step-end infinite;color:var(--primary);margin-left:2px;font-weight:300}@keyframes blink-cursor{0%,100%{opacity:1}50%{opacity:0}}.crt-boot{position:fixed;inset:0;z-index:10000;background:#0d0a06;pointer-events:none}.crt-boot .boot-static{position:absolute;inset:0;background:linear-gradient(180deg,transparent 0%,rgba(255,255,255,.92) 49.8%,rgba(255,255,255,.92) 50.2%,transparent 100%),repeating-linear-gradient(90deg,rgba(255,255,255,.14) 0 2px,transparent 2px 5px),repeating-linear-gradient(0,rgba(0,0,0,.16) 0 1px,rgba(255,255,255,8%) 1px 2px);filter:contrast(1.1)brightness(1.05);opacity:0;animation:boot-static 1.15s ease-out forwards}.crt-boot::before,.crt-boot::after{content:"";position:absolute;inset:0;pointer-events:none}.crt-boot::before{background:radial-gradient(circle at center,rgba(255,255,255,.18) 0 18%,transparent 62%);mix-blend-mode:screen;opacity:0;animation:boot-flare .22s ease-out forwards}.crt-boot::after{background:radial-gradient(ellipse at center,transparent 0 58%,rgba(0,0,0,.22) 100%)}@keyframes boot-static{0%{opacity:0;transform:scaleY(.08)}12%{opacity:.9;transform:scaleY(.18)}50%{opacity:.88;transform:scaleY(1)}78%{opacity:.48;transform:scaleY(1)}100%{opacity:0;transform:scaleY(1)}}@keyframes boot-flare{0%{opacity:.95;transform:scale(.3)}100%{opacity:0;transform:scale(2.1)}}.crt-boot.fade-out{opacity:0;transition:opacity .4s ease}#eeg-waveform{position:absolute;left:0;right:0;top:0;bottom:0;pointer-events:none;opacity:.06;z-index:0}.sat-pass{position:fixed;width:3px;height:3px;background:var(--primary);border-radius:50%;box-shadow:0 0 6px 2px rgba(255,176,0,.5);z-index:9990;pointer-events:none;opacity:0}@keyframes sat-fly{0%{opacity:0;transform:translate(-20px,-20px)}5%{opacity:.8}90%{opacity:.6}100%{opacity:0;transform:translate(calc(100vw + 20px),calc(50vh + 20px))}}.sat-pass.animate{animation:sat-fly 12s linear forwards}.avatar-container{position:relative;display:inline-block}.avatar-overlay{position:absolute;inset:0;opacity:0;transition:opacity .3s ease;pointer-events:none}.avatar-container:hover .avatar-overlay{opacity:1}.avatar-overlay circle{fill:none;stroke:var(--primary);stroke-width:1.5;opacity:0;transition:opacity .3s ease}.avatar-container:hover .avatar-overlay circle{opacity:.7;animation:electrode-pulse 2s ease-in-out infinite}.avatar-overlay text{fill:var(--primary);font-size:5px;font-family:monospace;opacity:0;transition:opacity .3s ease .15s}.avatar-container:hover .avatar-overlay text{opacity:.9}@keyframes electrode-pulse{0%,100%{r:3}50%{r:4}}#phosphor-canvas{position:fixed;inset:0;pointer-events:none;z-index:9997;opacity:.15;mix-blend-mode:screen}:root[data-theme=dark] #noise-grain{position:fixed;inset:-50%;width:200%;height:200%;pointer-events:none;z-index:9996;opacity:.025;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:256px 256px;animation:grain-shift .5s steps(4)infinite}@keyframes grain-shift{0%{transform:translate(0,0)}25%{transform:translate(-5%,-5%)}50%{transform:translate(5%,0)}75%{transform:translate(-2%,5%)}100%{transform:translate(0,0)}}.glitch-target{position:relative;display:inline-block}.glitch-target.glitching::before,.glitch-target.glitching::after{content:attr(data-text);position:absolute;top:0;left:0;width:100%;height:100%}.glitch-target.glitching::before{color:#ff0040;animation:glitch-1 .15s linear;clip-path:inset(20% 0 40% 0)}.glitch-target.glitching::after{color:#00d4ff;animation:glitch-2 .15s linear;clip-path:inset(60% 0 10% 0)}@keyframes glitch-1{0%{transform:translate(0)}20%{transform:translate(-3px,1px)}40%{transform:translate(3px,-1px)}60%{transform:translate(-2px,2px)}80%{transform:translate(2px,-2px)}100%{transform:translate(0)}}@keyframes glitch-2{0%{transform:translate(0)}20%{transform:translate(3px,-1px)}40%{transform:translate(-3px,2px)}60%{transform:translate(2px,-1px)}80%{transform:translate(-2px,1px)}100%{transform:translate(0)}}.avatar-overlay.pulse circle{opacity:.9!important;animation:electrode-burst 2s ease-out forwards!important}.avatar-overlay.pulse text{opacity:1!important}@keyframes electrode-burst{0%{r:3;opacity:.9}30%{r:5;opacity:1}100%{r:3;opacity:0}
1}body{padding-top:44px}.contact-form{display:flex;flex-direction:column;gap:16px;max-width:500px;margin:24px 0;font-family:var(--font-mono)}.contact-form label{display:flex;flex-direction:column;gap:6px;color:var(--primary);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em}.contact-form input[type=text],.contact-form input[type=email],.contact-form textarea{background:var(--entry);border:1px solid var(--border);border-radius:2px;color:var(--content);padding:10px 12px;font-family:inherit;font-size:13px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}.contact-form input[type=text]:focus,.contact-form input[type=email]:focus,.contact-form textarea:focus{border-color:var(--primary);background:rgba(255,176,0,2%);box-shadow:0 0 10px rgba(255,176,0,.15);outline:2px solid var(--primary);outline-offset:2px}.contact-form input[type=text]:focus:invalid,.contact-form input[type=email]:focus:invalid,.contact-form textarea:focus:invalid{border-color:#ff4040;outline-color:#ff4040;box-shadow:0 0 10px rgba(255,64,64,.15)}[data-theme=light] .contact-form input[type=text]:focus,[data-theme=light] .contact-form input[type=email]:focus,[data-theme=light] .contact-form textarea:focus{background:#fff;box-shadow:0 2px 6px rgba(0,0,0,5%)}.contact-form button[type=submit]{background:0 0;color:var(--primary);border:1px solid var(--primary);border-radius:2px;padding:12px;font-family:inherit;font-size:13px;font-weight:700;cursor:pointer;text-transform:uppercase;letter-spacing:.05em;transition:background .2s,color .2s,box-shadow .2s,transform .1s;display:flex;align-items:center;justify-content:center;gap:8px}.contact-form button[type=submit]::before{content:'❯';font-size:11px}.contact-form button[type=submit]:hover{background:var(--primary);color:var(--theme);box-shadow:0 0 12px rgba(255,176,0,.35)}.contact-form button[type=submit]:hover::before{animation:blink-cursor 1s step-end infinite}.contact-form button[type=submit]:active{transform:scale(.98)}.contact-form button[type=submit]:disabled{background:var(--secondary);color:var(--theme);cursor:not-allowed;opacity:.5}.contact-form .form-status{margin:4px 0 0;font-size:12px;font-weight:600}.contact-form .form-status.ok{color:#40ff40}[data-theme=light] .contact-form .form-status.ok{color:#0a0}.contact-form .form-status.err{color:#ff4040}[data-theme=light] .contact-form .form-status.err{color:#c00}.contact-form .hp{display:none!important}.post-single{font-family:var(--font-mono);font-size:15px;line-height:1.7}.post-single .post-content{font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,Oxygen,Ubuntu,Cantarell,open sans,helvetica neue,sans-serif;font-size:1rem;line-height:1.78}.post-single .post-content code,.post-single .post-content kbd,.post-single .post-content pre,.post-single .post-content table,.post-single .post-content .highlight,.post-single .post-content .highlight *{font-family:var(--font-mono)}.post-single .entry-title{color:var(--primary)}.post-single h2,.post-single h3,.post-single h4{font-family:var(--font-mono);color:var(--primary);margin-top:32px;margin-bottom:12px;letter-spacing:.02em;border-bottom:1px dashed var(--border);padding-bottom:6px}[data-theme=dark] .post-single h2,[data-theme=dark] .post-single h3,[data-theme=dark] .post-single h4{text-shadow:0 0 8px rgba(255,176,0,.2)}.post-single h2::before,.post-single h3::before,.post-single h4::before{content:'>> ';color:var(--border)}.post-single ul{list-style:none;padding-left:12px}.post-single ul li{position:relative;padding-left:16px;margin-bottom:6px}.post-single ul li::before{content:'→';position:absolute;left:0;color:var(--primary)}.post-single blockquote{border-left:2px solid var(--primary);background:rgba(255,176,0,1%);margin:16px 0;padding:10px 16px;font-style:italic;color:var(--content)}[data-theme=dark] .post-single blockquote{box-shadow:inset 2px 0 0 var(--primary);border-left:none}.post-single table{width:100%;border-collapse:collapse;margin:16px 0}.post-single th,.post-single td{border:1px solid var(--border);padding:8px 12px;text-align:left}.post-single th{background:var(--entry);color:var(--primary);font-weight:700}.post-single img{border:1px solid var(--border);border-radius:4px;margin:16px 0}#terminal-bar{position:fixed;top:0;left:0;right:0;z-index:9999;font-family:var(--font-mono);transition:background .2s}.term-bar-collapsed{display:flex;align-items:center;gap:10px;min-height:44px;padding:8px 20px;background:rgba(13,10,6,.85);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);cursor:pointer;font-size:.82rem;transition:background .2s;width:100%}.term-bar-collapsed:hover{background:rgba(26,21,13,.95)}.term-bar-collapsed:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;background:rgba(26,21,13,.95)}.term-bar-logo{color:var(--primary);text-decoration:none;font-weight:700;font-size:.88rem;letter-spacing:.02em;flex-shrink:0;margin-right:4px}.term-bar-logo:hover{opacity:.8}.term-bar-placeholder{color:var(--secondary);opacity:.92;flex:1}.term-bar-help{color:var(--secondary);opacity:.72;font-size:.74rem;white-space:nowrap}.term-bar-hint{font-size:.7rem;color:var(--primary);opacity:.5;padding:1px 6px;border:1px solid var(--border);border-radius:3px}@media(max-width:640px){.term-bar-collapsed{padding-inline:14px}.term-bar-help{display:none}.term-bar-hint{display:none}}.term-bar-expanded{display:none;background:rgba(13,10,6,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:0 8px 32px rgba(0,0,0,.5)}@keyframes term-slide-down{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}#terminal-bar.expanded .term-bar-collapsed{display:none}#terminal-bar.expanded .term-bar-expanded{display:block;animation:term-slide-down .2s ease-out}.cmd-terminal-header{padding:10px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:.78rem;background:rgba(255,255,255,2%)}.cmd-close-hint{font-size:.68rem;opacity:.4}.cmd-terminal-output{max-height:320px;overflow-y:auto;padding:10px 20px;font-size:.82rem;line-height:1.6;white-space:pre-wrap;word-break:break-word;scrollbar-width:thin;scrollbar-color:var(--border)transparent}.cmd-terminal-output::-webkit-scrollbar{width:4px}.cmd-terminal-output::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.cmd-terminal-line{margin-bottom:6px;padding-bottom:6px;border-bottom:1px solid rgba(255,176,0,5%)}.cmd-suggestions{display:none;border-top:1px solid var(--border);max-height:210px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--border)transparent}.cmd-suggestions::-webkit-scrollbar{width:4px}.cmd-suggestions::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.cmd-sugg{display:flex;align-items:baseline;gap:10px;padding:8px 20px;cursor:pointer;font-size:.85rem;border-left:2px solid transparent;transition:background .1s,border-color .1s}.cmd-sugg:hover,.cmd-sugg.sel{background:rgba(255,176,0,8%);border-left-color:var(--primary)}.cmd-sugg-kind{flex-shrink:0;min-width:40px;text-align:center;font-size:.6rem;text-transform:uppercase;letter-spacing:.05em;
1color:var(--theme);background:var(--secondary);padding:1px 5px;border-radius:3px}.cmd-sugg:hover .cmd-sugg-kind,.cmd-sugg.sel .cmd-sugg-kind{background:var(--primary)}.cmd-sugg-label{color:var(--content);flex-shrink:0;max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cmd-sugg-sub{color:var(--secondary);font-size:.72rem;margin-left:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cmd-terminal-input-row{display:flex;align-items:center;gap:12px;padding:12px 20px;border-top:1px solid var(--border);background:rgba(0,0,0,.2);transition:background .15s,border-top-color .15s}.cmd-terminal-input-row:focus-within{background:rgba(0,0,0,.3);border-top-color:var(--primary)}.cmd-terminal-input-row .cmd-palette-input{flex:1;background:0 0;border:none;outline:none;color:var(--content);font-family:inherit;font-size:.95rem;caret-color:var(--primary)}.cmd-btn{background:0 0;border:1px solid var(--border);color:var(--secondary);font-family:inherit;font-size:.75rem;padding:2px 8px;border-radius:3px;cursor:pointer;flex-shrink:0;transition:color .15s,border-color .15s;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.cmd-btn:hover,.cmd-btn:active{color:var(--primary);border-color:var(--primary)}.cmd-btn-close:hover{color:#ff4040;border-color:#ff4040}.t-prompt{color:var(--primary);font-weight:700}.t-hi{color:var(--primary)}.t-dim{color:var(--secondary)}.t-cmd{color:var(--primary);font-weight:600}.t-err{color:#ff4040}.t-input{color:var(--content)}[data-theme=light] .term-bar-collapsed{background:rgba(244,240,232,.92);border-bottom-color:var(--border)}[data-theme=light] .term-bar-collapsed:hover{background:rgba(234,228,218,.97)}[data-theme=light] .term-bar-collapsed:focus-visible{background:rgba(234,228,218,.97)}[data-theme=light] .term-bar-expanded{background:rgba(244,240,232,.97);box-shadow:0 8px 32px rgba(0,0,0,.12)}[data-theme=light] .cmd-terminal-input-row{background:rgba(0,0,0,5%)}[data-theme=light] .cmd-terminal-input-row:focus-within{background:rgba(0,0,0,8%)}[data-theme=light] .cmd-terminal-line{border-bottom-color:rgba(139,119,75,8%)}[data-theme=light] .cmd-sugg:hover,[data-theme=light] .cmd-sugg.sel{background:rgba(0,0,0,4%)}#terminal-bar.expanded+.header,#terminal-bar.expanded~.main{}:root[data-theme=high-contrast]{--theme:#000000;--entry:#000000;--primary:#ffffff;--content:#ffffff;--secondary:#ffff00;--border:#ffffff;--tertiary:#000000;--code-bg:#000000;--code-block-bg:#000000;color-scheme:dark}:root[data-theme=high-contrast] body::after{display:none!important}:root[data-theme=high-contrast] #terminal-bar{background:#000!important;border-bottom:2px solid #fff!important}:root[data-theme=high-contrast] .term-bar-collapsed{background:#000!important;border-bottom:2px solid #fff!important}:root[data-theme=high-contrast] .tui-grid{border-width:2px!important}:root[data-theme=high-contrast] .tui-panel{border-right-width:2px!important;border-bottom-width:2px!important}:root[data-theme=high-contrast] .tui-panel-title{background:var(--secondary)!important;color:#000!important}:root[data-theme=high-contrast] .tui-social a::before,:root[data-theme=high-contrast] .tui-social a::after{color:var(--primary)!important}</style><meta name=theme-color content="#0d0a06" media="(prefers-color-scheme: dark)"><meta name=theme-color content="#f4f0e8" media="(prefers-color-scheme: light)"><meta name=msapplication-TileColor content="#0d0a06"><link rel=manifest href=/site.webmanifest><link rel=icon type=image/svg+xml href=https://elkos.gr/favicon.svg>
1<script src="/js/command-palette.js?v=33" defer></script>
1<meta property="og:url" content="https://elkos.gr/contact/"><meta property="og:site_name" content="Eleftherios Kosmas"><meta property="og:title" content="Contact"><meta property="og:description" content="Contact Eleftherios Kosmas for feedback, collaboration, corrections, or questions about the EEG and sleep reference tools on elkos.gr."><meta property="og:locale" content="en_US"><meta property="og:type" content="article"><meta property="article:section" content="pages"><meta property="article:published_time" content="2019-08-25T00:00:00+00:00"><meta property="article:modified_time" content="2026-05-31T00:00:00+00:00"><meta property="og:image" content="https://elkos.gr/contact/images/cover_hu_4280be5a143518c1.jpg"><meta name=twitter:card content="summary_large_image"><meta name=twitter:image content="https://elkos.gr/contact/images/cover_hu_4280be5a143518c1.jpg"><meta name=twitter:title content="Contact"><meta name=twitter:description content="Contact Eleftherios Kosmas for feedback, collaboration, corrections, or questions about the EEG and sleep reference tools on elkos.gr.">
1<script type=application/ld+json>{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Pages","item":"https://elkos.gr/pages/"},{"@type":"ListItem","position":2,"name":"Contact","item":"https://elkos.gr/contact/"}]}</script>
1<script type=application/ld+json>{"@context":"https://schema.org","@type":"BlogPosting","headline":"Contact","name":"Contact","description":"Contact Eleftherios Kosmas for feedback, collaboration, corrections, or questions about the EEG and sleep reference tools on elkos.gr.","keywords":[],"articleBody":"Use the form below to get in touch, or email me directly at [email protected].\nFor feedback about the 10-20 EEG Visualizer, please include your browser/device and whether the issue appeared in the 2D view, 3D view, or measurement workflow.\nThe form sends your message by email. There is no newsletter, tracking list, or automated follow-up sequence. If the form fails, use the email address above.\nName Email Message Send message ","wordCount":"70","inLanguage":"en","image":"https://elkos.gr/contact/images/cover_hu_4280be5a143518c1.jpg","datePublished":"2019-08-25T00:00:00Z","dateModified":"2026-05-31T00:00:00Z","author":{"@type":"Person","name":"Eleftherios Kosmas"},"mainEntityOfPage":{"@type":"WebPage","@id":"https://elkos.gr/contact/"},"publisher":{"@type":"Organization","name":"Eleftherios Kosmas","logo":{"@type":"ImageObject","url":"https://elkos.gr/favicon.ico"}}}</script>
1</head><body id=top><header class=header><nav class=nav><div class=logo><a href=https://elkos.gr/ accesskey=h title="elkos.gr (Alt + H)">elkos.gr</a><div class=logo-switches><button id=theme-toggle accesskey=t title="(Alt + T)" aria-label="Toggle theme">
2<svg id="moon" width="24" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1111.21 3 7 7 0 0021 12.79z"/></svg>
3<svg id="sun" width="24" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg></button><ul class=lang-switch><li>|</li><li><a href=https://elkos.gr/el/ title=Ελληνικά aria-label=Ελληνικά>Ελληνικά</a></li></ul></div></div><ul id=menu></ul></nav></header><main class=main><div class=reading-progress-container><div class=reading-progress-bar id=reading-progress></div></div><article class=post-single lang=en><header class=post-header><div class=breadcrumbs><a href=https://elkos.gr/>Home</a>&nbsp;»&nbsp;<a href=https://elkos.gr/pages/>Pages</a></div><h1 class="post-title entry-hint-parent">Contact</h1><div class=post-description>Contact Eleftherios Kosmas for feedback, collaboration, corrections, or questions about the EEG and sleep reference tools on elkos.gr.</div><div class=post-meta><span title='2019-08-25 00:00:00 +0000 UTC'>August 25, 2019</span>&nbsp;·&nbsp;<span>1 min</span>&nbsp;·&nbsp;<span>Eleftherios Kosmas</span>&nbsp;|&nbsp;<span>Translations:</span><ul class=i18n_list><li><a href=https://elkos.gr/el/contact/>Ελληνικά</a></li></ul></div></header><figure class=entry-cover><picture><source type=image/webp srcset='https://elkos.gr/contact/images/cover_hu_6268b11fc9709b4.webp 360w, https://elkos.gr/contact/images/cover_hu_ba283ccdb873fc9a.webp 480w, https://elkos.gr/contact/images/cover_hu_8dad5845c24ffec0.webp 720w, https://elkos.gr/contact/images/cover_hu_ba962b7cd0f2486d.webp 1080w' sizes="(min-width: 768px) 720px, 100vw"><img loading=eager decoding=async src=https://elkos.gr/contact/images/cover_hu_d21979e010a74b04.jpg width=1280 height=960 alt="Public mailbox for letters"></picture><figcaption>Zalasem1, Wikimedia Commons (CC BY 4.0)</figcaption></figure><div class=post-content><p>Use the form below to get in touch, or email me directly at <strong><a href="/cdn-cgi/l/email-protection#e18c80888da1848d8a8e92cf8693"><span class="__cf_email__" data-cfemail="5e333f37321e3b3235312d70392c">[email&#160;protected]</span></a></strong>.</p><p>For feedback about the <a href=/1020/>10-20 EEG Visualizer</a>, please include your browser/device and whether the issue appeared in the 2D view, 3D view, or measurement workflow.</p><p>The form sends your message by email. There is no newsletter, tracking list, or automated follow-up sequence. If the form fails, use the email address above.</p><form id=contact-form class=contact-form data-sending=Sending… data-success="Message sent — thank you. I'll get back to you soon." data-error="Couldn't send the message. Please email me directly at [email protected]."><label>Name<input type=text name=name required autocomplete=name></label>
4<label>Email<input type=email name=email required autocomplete=email></label>
5<label>Message<textarea name=message rows=6 required></textarea></label>
6<input type=checkbox name=botcheck class=hp tabindex=-1 autocomplete=off aria-hidden=true>
7<input type=hidden name=subject value="New message from elkos.gr">
8<input type=hidden name=from_name value="elkos.gr contact form">
9<button type=submit>Send message</button><p class=form-status role=status aria-live=polite></p></form>
vendor: 108 bytes, line 9
9<script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script>
9<script src="/js/contact-form.js?v=1" defer></script>
9</div><footer class=post-footer><ul class=post-tags></ul><ul class=share-buttons><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on x" href="https://x.com/intent/tweet/?text=Contact&amp;url=https%3a%2f%2felkos.gr%2fcontact%2f&amp;hashtags="><svg viewBox="0 0 512 512" height="30" width="30" fill="currentColor"><path d="M512 62.554V449.446C512 483.97 483.97 512 449.446 512H62.554C28.03 512 0 483.97.0 449.446V62.554C0 28.03 28.029.0 62.554.0H449.446C483.971.0 512 28.03 512 62.554zM269.951 190.75 182.567 75.216H56L207.216 272.95 63.9 436.783h61.366L235.9 310.383l96.667 126.4H456L298.367 228.367l134-153.151H371.033zM127.633 110h36.468l219.38 290.065H349.5z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on linkedin" href="https://www.linkedin.com/shareArticle?mini=true&amp;url=https%3a%2f%2felkos.gr%2fcontact%2f&amp;title=Contact&amp;summary=Contact&amp;source=https%3a%2f%2felkos.gr%2fcontact%2f"><svg viewBox="0 0 512 512" height="30" width="30" fill="currentColor"><path d="M449.446.0C483.971.0 512 28.03 512 62.554v386.892C512 483.97 483.97 512 449.446 512H62.554c-34.524.0-62.554-28.03-62.554-62.554V62.554c0-34.524 28.029-62.554 62.554-62.554h386.892zM160.461 423.278V197.561h-75.04v225.717h75.04zm270.539.0V293.839c0-69.333-37.018-101.586-86.381-101.586-39.804.0-57.634 21.891-67.617 37.266v-31.958h-75.021c.995 21.181.0 225.717.0 225.717h75.02V297.222c0-6.748.486-13.492 2.474-18.315 5.414-13.475 17.767-27.434 38.494-27.434 27.135.0 38.007 20.707 38.007 51.037v120.768H431zM123.448 88.722C97.774 88.722 81 105.601 81 127.724c0 21.658 16.264 39.002 41.455 39.002h.484c26.165.0 42.452-17.344 42.452-39.002-.485-22.092-16.241-38.954-41.943-39.002z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on reddit" href="https://reddit.com/submit?url=https%3a%2f%2felkos.gr%2fcontact%2f&title=Contact"><svg viewBox="0 0 512 512" height="30" width="30" fill="currentColor"><path d="M449.446.0C483.971.0 512 28.03 512 62.554v386.892C512 483.97 483.97 512 449.446 512H62.554c-34.524.0-62.554-28.03-62.554-62.554V62.554c0-34.524 28.029-62.554 62.554-62.554h386.892zM446 265.638c0-22.964-18.616-41.58-41.58-41.58-11.211.0-21.361 4.457-28.841 11.666-28.424-20.508-67.586-33.757-111.204-35.278l18.941-89.121 61.884 13.157c.756 15.734 13.642 28.29 29.56 28.29 16.407.0 29.706-13.299 29.706-29.701.0-16.403-13.299-29.702-29.706-29.702-11.666.0-21.657 6.792-26.515 16.578l-69.105-14.69c-1.922-.418-3.939-.042-5.585 1.036-1.658 1.073-2.811 2.761-3.224 4.686l-21.152 99.438c-44.258 1.228-84.046 14.494-112.837 35.232-7.468-7.164-17.589-11.591-28.757-11.591-22.965.0-41.585 18.616-41.585 41.58.0 16.896 10.095 31.41 24.568 37.918-.639 4.135-.99 8.328-.99 12.576.0 63.977 74.469 115.836 166.33 115.836s166.334-51.859 166.334-115.836c0-4.218-.347-8.387-.977-12.493 14.564-6.47 24.735-21.034 24.735-38.001zM326.526 373.831c-20.27 20.241-59.115 21.816-70.534 21.816-11.428.0-50.277-1.575-70.522-21.82-3.007-3.008-3.007-7.882.0-10.889 3.003-2.999 7.882-3.003 10.885.0 12.777 12.781 40.11 17.317 59.637 17.317 19.522.0 46.86-4.536 59.657-17.321 3.016-2.999 7.886-2.995 10.885.008 3.008 3.011 3.003 7.882-.008 10.889zm-5.23-48.781c-16.373.0-29.701-13.324-29.701-29.698.0-16.381 13.328-29.714 29.701-29.714 16.378.0 29.706 13.333 29.706 29.714.0 16.374-13.328 29.698-29.706 29.698zM160.91 295.348c0-16.381 13.328-29.71 29.714-29.71 16.369.0 29.689 13.329 29.689 29.71.0 16.373-13.32 29.693-29.689 29.693-16.386.0-29.714-13.32-29.714-29.693z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on facebook" href="https://facebook.com/sharer/sharer.php?u=https%3a%2f%2felkos.gr%2fcontact%2f"><svg viewBox="0 0 512 512" height="30" width="30" fill="currentColor"><path d="M449.446.0C483.971.0 512 28.03 512 62.554v386.892C512 483.97 483.97 512 449.446 512H342.978V319.085h66.6l12.672-82.621h-79.272v-53.617c0-22.603 11.073-44.636 46.58-44.636H425.6v-70.34s-32.71-5.582-63.982-5.582c-65.288.0-107.96 39.569-107.96 111.204v62.971h-72.573v82.621h72.573V512h-191.104c-34.524.0-62.554-28.03-62.554-62.554V62.554c0-34.524 28.029-62.554 62.554-62.554h386.892z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on whatsapp" href="https://api.whatsapp.com/se
9nd?text=Contact%20-%20https%3a%2f%2felkos.gr%2fcontact%2f"><svg viewBox="0 0 512 512" height="30" width="30" fill="currentColor"><path d="M449.446.0C483.971.0 512 28.03 512 62.554v386.892C512 483.97 483.97 512 449.446 512H62.554c-34.524.0-62.554-28.03-62.554-62.554V62.554c0-34.524 28.029-62.554 62.554-62.554h386.892zm-58.673 127.703c-33.842-33.881-78.847-52.548-126.798-52.568-98.799.0-179.21 80.405-179.249 179.234-.013 31.593 8.241 62.428 23.927 89.612l-25.429 92.884 95.021-24.925c26.181 14.28 55.659 21.807 85.658 21.816h.074c98.789.0 179.206-80.413 179.247-179.243.018-47.895-18.61-92.93-52.451-126.81zM263.976 403.485h-.06c-26.734-.01-52.954-7.193-75.828-20.767l-5.441-3.229-56.386 14.792 15.05-54.977-3.542-5.637c-14.913-23.72-22.791-51.136-22.779-79.287.033-82.142 66.867-148.971 149.046-148.971 39.793.014 77.199 15.531 105.329 43.692 28.128 28.16 43.609 65.592 43.594 105.4-.034 82.149-66.866 148.983-148.983 148.984zm81.721-111.581c-4.479-2.242-26.499-13.075-30.604-14.571-4.105-1.495-7.091-2.241-10.077 2.241-2.986 4.483-11.569 14.572-14.182 17.562-2.612 2.988-5.225 3.364-9.703 1.12-4.479-2.241-18.91-6.97-36.017-22.23C231.8 264.15 222.81 249.484 220.198 245s-.279-6.908 1.963-9.14c2.016-2.007 4.48-5.232 6.719-7.847 2.24-2.615 2.986-4.484 4.479-7.472 1.493-2.99.747-5.604-.374-7.846-1.119-2.241-10.077-24.288-13.809-33.256-3.635-8.733-7.327-7.55-10.077-7.688-2.609-.13-5.598-.158-8.583-.158-2.986.0-7.839 1.121-11.944 5.604-4.105 4.484-15.675 15.32-15.675 37.364.0 22.046 16.048 43.342 18.287 46.332 2.24 2.99 31.582 48.227 76.511 67.627 10.685 4.615 19.028 7.371 25.533 9.434 10.728 3.41 20.492 2.929 28.209 1.775 8.605-1.285 26.499-10.833 30.231-21.295 3.732-10.464 3.732-19.431 2.612-21.298-1.119-1.869-4.105-2.99-8.583-5.232z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on telegram" href="https://telegram.me/share/url?text=Contact&amp;url=https%3a%2f%2felkos.gr%2fcontact%2f"><svg viewBox="2 2 28 28" height="30" width="30" fill="currentColor"><path d="M26.49 29.86H5.5a3.37 3.37.0 01-2.47-1 3.35 3.35.0 01-1-2.47V5.48A3.36 3.36.0 013 3 3.37 3.37.0 015.5 2h21A3.38 3.38.0 0129 3a3.36 3.36.0 011 2.46V26.37a3.35 3.35.0 01-1 2.47 3.38 3.38.0 01-2.51 1.02zm-5.38-6.71a.79.79.0 00.85-.66L24.73 9.24a.55.55.0 00-.18-.46.62.62.0 00-.41-.17q-.08.0-16.53 6.11a.59.59.0 00-.41.59.57.57.0 00.43.52l4 1.24 1.61 4.83a.62.62.0 00.63.43.56.56.0 00.4-.17L16.54 20l4.09 3A.9.9.0 0021.11 23.15zM13.8 20.71l-1.21-4q8.72-5.55 8.78-5.55c.15.0.23.0.23.16a.18.18.0 010 .06s-2.51 2.3-7.52 6.8z"/></svg></a></li><li><a target=_blank rel="noopener noreferrer" aria-label="share Contact on ycombinator" href="https://news.ycombinator.com/submitlink?t=Contact&u=https%3a%2f%2felkos.gr%2fcontact%2f"><svg width="30" height="30" viewBox="0 0 512 512" fill="currentColor"><path d="M449.446.0C483.971.0 512 28.03 512 62.554V449.446C512 483.97 483.97 512 449.446 512H62.554C28.03 512 0 483.97.0 449.446V62.554C0 28.03 28.029.0 62.554.0H449.446zM183.8767 87.9921h-62.034L230.6673 292.4508V424.0079h50.6655V292.4508L390.1575 87.9921H328.1233L256 238.2489z"/></svg></a></li></ul></footer></article><style>.archive-note{border-left:3px solid var(--primary);background:var(--entry);color:var(--secondary);padding:12px 16px;margin:0 0 24px;font-size:.9rem;border-radius:0 4px 4px 0;position:relative}.archive-note::before{content:'\1F4C1 ';margin-right:4px}.archive-related{margin:36px 0 24px;padding-top:18px;border-top:1px solid var(--border);font-family:var(--font-mono)}.archive-related h2{color:var(--primary);font-size:1rem;letter-spacing:.04em;margin:0 0 14px;border-bottom:none;padding-bottom:0}.post-single .archive-related h2::before{content:none}.post-single .archive-related h2 .anchor{display:none}.post-single .archive-related ul,.post-single .archive-related ol{list-style:none;margin:0;padding:0;display:grid;gap:8px}.post-single .archive-related li{margin:0;padding-left:0}.post-single .archive-related li::before{content:none}.post-single .archive-related li>a{display:block;border-left:3px solid var(--border);background:var(--entry);padding:8px 12px;text-decoration:none}.post-single .archive-related li>a:hover{border-left-color:var(--primary);background:var(--tertiary)}.post-single .archive-related .related-year{color:var(--secondary);font-size:.85rem;margin-left:.4rem}.story-trail{margin:40px 0 24px;padding:18px;border:1px solid var(--border);border-radius:4px 18px 4px 18px;background:linear-gradient(135deg,rgba(255,176,0,5%),transparent 65%)}.story-trail-kicker{color:var(--primary);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px}.story-trail-header{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.story-trail h2{margin:0 0 6px;padding:0;border:0;color:var(--content);font-size:1.12rem}.story-trail h2::before{content:none}.story-trail h2 .anchor{display:none}.story-trail-header p{margin:0;color:var(--secondary);font-size:.88rem;line-height:1.55}.story-trail-explore{flex:none;color:var(--primary);font-family:var(--font-mono);font-size:.78rem;text-decoration:none}.story-trail-progress{height:3px;margin:16px 0;overflow:hidden;background:var(--border);border-radius:99px}
9.story-trail-progress span{display:block;height:100%;background:var(--primary)}.story-trail-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px}.story-trail-step{display:flex;flex-direction:column;gap:3px;padding:9px 12px;border-left:3px solid var(--border);background:var(--entry);text-decoration:none}.story-trail-step:hover{border-left-color:var(--primary)}.story-trail-step.next{text-align:right;border-left:0;border-right:3px solid var(--border)}.story-trail-step.next:hover{border-right-color:var(--primary)}.story-trail-step span{color:var(--secondary);font-family:var(--font-mono);font-size:.7rem}.story-trail-step strong{color:var(--content);font-size:.82rem;line-height:1.35}.story-trail-step.empty{visibility:hidden}.story-trail-contents{margin-top:12px;font-size:.82rem}.story-trail-contents summary{color:var(--secondary);cursor:pointer;font-family:var(--font-mono)}.story-trail-contents ol{margin:10px 0 0;padding-left:28px}.story-trail-contents li{margin:5px 0;padding-left:3px}.story-trail-contents li.current{color:var(--primary);font-weight:700}.story-trail-contents li span{color:var(--secondary);font-size:.72rem;margin-left:5px}.archive-backlinks{margin:32px 0 24px;padding-top:18px;border-top:1px dashed var(--border)}.archive-backlinks h2{margin:0 0 12px;padding:0;border:0;color:var(--primary);font-family:var(--font-mono);font-size:.9rem}.archive-backlinks h2::before{content:none}.archive-backlinks h2 .anchor{display:none}.archive-backlinks h2 span{color:var(--secondary);font-size:.72rem}.archive-backlinks ul{list-style:none;margin:0;padding:0}.archive-backlinks li{display:flex;justify-content:space-between;gap:12px;margin:5px 0;padding-left:0}.archive-backlinks li::before{content:none}.archive-backlinks a{color:var(--content);font-size:.84rem;text-decoration:none}.archive-backlinks a:hover{color:var(--primary)}.archive-backlinks time{color:var(--secondary);font-family:var(--font-mono);font-size:.72rem}@media(max-width:640px){.story-trail-header{flex-direction:column;gap:10px}.story-trail-nav{grid-template-columns:1fr}.story-trail-step.next{text-align:left;border-right:0;border-left:3px solid var(--border)}.story-trail-step.next:hover{border-left-color:var(--primary)}.story-trail-step.empty{display:none}}.update-note{border-left:3px solid #4caf50;background:var(--entry);color:var(--content);padding:12px 16px;margin:0 0 24px;font-size:.9rem;display:flex;flex-direction:column;gap:6px}.update-note-badge{display:inline-block;background:#4caf50;color:#fff;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:2px 8px;border-radius:3px;align-self:flex-start;font-family:var(--font-mono)}.update-note-text{line-height:1.5}.archive-context{border:1px dashed var(--primary);background:var(--entry);color:var(--content);padding:14px 16px;margin:28px 0 24px;border-radius:6px;display:flex;flex-direction:column;gap:8px}.archive-context-badge{display:inline-flex;align-items:center;align-self:flex-start;gap:6px;font-family:var(--font-mono);font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--primary)}.archive-context-badge::before{content:'\1F551'}.archive-context-text{line-height:1.6;font-size:.95rem}.archive-context-text>:first-child{margin-top:0}.archive-context-text>:last-child{margin-bottom:0}.reading-progress-container{position:fixed;top:0;left:0;width:100%;height:2px;background:0 0;z-index:9998}.reading-progress-bar{height:100%;width:0%;background:var(--primary);transition:width .15s ease-out}[data-theme=dark] .reading-progress-bar{box-shadow:0 0 8px rgba(255,176,0,.4)}[data-theme=light] .reading-progress-bar{box-shadow:0 1px 4px rgba(0,0,0,.1)}.post-single .entry-cover{margin:0 0 28px}.post-single .entry-cover img{width:100%;max-height:260px;object-fit:cover;border-radius:4px;border:1px solid var(--border)}.post-single .entry-cover figcaption{font-family:var(--font-mono);font-size:11px;color:var(--secondary);text-align:center;margin-top:8px}[data-theme=dark] .post-single .entry-cover img{filter:saturate(.8)contrast(1.05)}.post-footer{margin-top:32px;padding-top:24px;border-top:1px dashed var(--border)}[data-theme=dark] .post-single blockquote{background:linear-gradient(135deg,rgba(255,176,0,3%) 0%,rgba(255,176,0,1%) 100%)}[data-theme=light] .post-single blockquote{background:linear-gradient(135deg,rgba(139,115,85,4%) 0%,rgba(139,115,85,1%) 100%)}.paginav a{transition:background .2s ease,transform .2s ease}.paginav a:hover{transform:scale(1.02)}@media(min-width:1280px){.toc{position:fixed!important;top:80px;
9left:calc(50% + (var(--main-width,720px)/2) + 40px);width:260px;max-height:calc(100vh - 120px);overflow-y:auto;background:0 0!important;border:none!important;border-left:2px solid var(--border)!important;box-shadow:none!important;padding:0 0 0 16px!important;margin:0!important;font-size:.85rem}}</style>
9<script>(function(){function e(){const e=document.getElementById("reading-progress");if(!e)return;window.addEventListener("scroll",function(){const t=document.documentElement.scrollHeight-window.innerHeight,n=window.scrollY;if(t>0){const s=n/t*100;e.style.width=s+"%"}},{passive:!0})}document.readyState==="loading"?document.addEventListener("DOMContentLoaded",e):e()})()</script>
9</main><footer class=footer><span>&copy; 2026 <a href=https://elkos.gr/>Eleftherios Kosmas</a></span> ·
10<span>Powered by
11<a href=https://gohugo.io/ rel="noopener noreferrer" target=_blank>Hugo</a> &
12<a href=https://github.com/adityatelange/hugo-PaperMod/ rel=noopener target=_blank>PaperMod</a></span></footer><a href=#top aria-label="go to top" title="Go to Top (Alt + G)" class=top-link id=top-link accesskey=g><svg viewBox="0 0 12 6" fill="currentColor"><path d="M12 6H0l6-6z"/></svg>
13</a>
13<script>let menu=document.getElementById("menu");if(menu){const e=localStorage.getItem("menu-scroll-position");e&&(menu.scrollLeft=parseInt(e,10)),menu.onscroll=function(){localStorage.setItem("menu-scroll-position",menu.scrollLeft)}}document.querySelectorAll('a[href^="#"]').forEach(e=>{e.addEventListener("click",function(e){e.preventDefault();var t=this.getAttribute("href").substr(1);window.matchMedia("(prefers-reduced-motion: reduce)").matches?document.querySelector(`[id='${decodeURIComponent(t)}']`).scrollIntoView():document.querySelector(`[id='${decodeURIComponent(t)}']`).scrollIntoView({behavior:"smooth"}),t==="top"?history.replaceState(null,null," "):history.pushState(null,null,`#${t}`)})})</script>
13<script>var mybutton=document.getElementById("top-link");window.onscroll=function(){document.body.scrollTop>800||document.documentElement.scrollTop>800?(mybutton.style.visibility="visible",mybutton.style.opacity="1"):(mybutton.style.visibility="hidden",mybutton.style.opacity="0")}</script>
13<script>document.getElementById("theme-toggle").addEventListener("click",()=>{const e=document.querySelector("html");e.dataset.theme==="dark"?(e.dataset.theme="light",localStorage.setItem("pref-theme","light")):(e.dataset.theme="dark",localStorage.setItem("pref-theme","dark"))})</script>
13<script>document.querySelectorAll("pre > code").forEach(e=>{const n=e.parentNode.parentNode,t=document.createElement("button");t.classList.add("copy-code"),t.innerHTML="copy";function s(){t.innerHTML="copied!",setTimeout(()=>{t.innerHTML="copy"},2e3)}t.addEventListener("click",t=>{if("clipboard"in navigator){navigator.clipboard.writeText(e.textContent),s();return}const n=document.createRange();n.selectNodeContents(e);const o=window.getSelection();o.removeAllRanges(),o.addRange(n);try{document.execCommand("copy"),s()}catch{}o.removeRange(n)}),n.classList.contains("highlight")?n.appendChild(t):n.parentNode.firstChild==n||(e.parentNode.parentNode.parentNode.parentNode.parentNode.nodeName=="TABLE"?e.parentNode.parentNode.parentNode.parentNode.parentNode.appendChild(t):e.parentNode.appendChild(t))})</script>
13<!-- Cloudflare Pages Analytics -->
vendor: 99 bytes, line 13
13<script defer src='https://static.cloudflareinsights.com/beacon.min.js' data-cf-beacon='{"token": "
136c5912b8665a4368925618abd88276f5
vendor: 13 bytes, line 13
13"}'></script>
13<!-- Cloudflare Pages Analytics -->
13<script type="module" src="https://static.cloudflareinsights.com/beacon.min.js/v31edd6df95cf4e85bb4c19e7a9bdbcba1788362987495" integrity="sha512-iIg7k2xntmwu6/uSb5tpc/hySgZc4eoL31yB29W6tJFo2akwjPWcEqnCEdJvGexCL0KEQwVYv5BlowfhVz26hg==" data-cf-beacon='{"version":"2024.11.0","token":"f916a47484c44188a3d5f65a44ea698b","r":1,"spa":2}' crossorigin="anonymous"></script>
13
14</body></html>

Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.