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                <ol class="chapter"><li class="chapter-item expanded affix "><a href="../intro.html">Introduction</a></li><li class="chapter-item expanded "><a href="../tools/index.html"><strong aria-hidden="true">1.</strong> Tools</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../tools/zsh.html"><strong aria-hidden="true">1.1.</strong> zsh</a></li><li class="chapter-item expanded "><a href="../tools/bash.html"><strong aria-hidden="true">1.2.</strong> bash</a></li><li class="chapter-item expanded "><a href="../tools/fish.html"><strong aria-hidden="true">1.3.</strong> fish</a></li><li class="chapter-item expanded "><a href="../tools/tmux.html"><strong aria-hidden="true">1.4.</strong> tmux</a></li><li class="chapter-item expanded "><a href="../tools/git.html"><strong aria-hidden="true">1.5.</strong> git</a></li><li class="chapter-item expanded "><a href="../tools/awk.html"><strong aria-hidden="true">1.6.</strong> awk</a></li><li class="chapter-item expanded "><a href="../tools/emacs.html"><strong aria-hidden="true">1.7.</strong> emacs</a></li><li class="chapter-item expanded "><a href="../tools/gpg.html"><strong aria-hidden="true">1.8.</strong> gpg</a></li><li class="chapter-item expanded "><a href="../tools/gdb.html"><strong aria-hidden="true">1.9.</strong> gdb</a></li><li class="chapter-item expanded "><a href="../tools/gdbserver.html"><strong aria-hidden="true">1.10.</strong> gdbserver</a></li><li class="chapter-item expanded "><a href="../tools/radare2.html"><strong aria-hidden="true">1.11.</strong> radare2</a></li><li class="chapter-item expanded "><a href="../tools/qemu.html"><strong aria-hidden="true">1.12.</strong> qemu</a></li><li class="chapter-item expanded "><a href="../tools/pacman.html"><strong aria-hidden="true">1.13.</strong> pacman</a></li><li class="chapter-item expanded "><a href="../tools/dot.html"><strong aria-hidden="true">1.14.</strong> dot</a></li><li class="chapter-item expanded "><a href="../tools/ffmpeg.html"><strong aria-hidden="true">1.15.</strong> ffmpeg</a></li><li class="chapter-item expanded "><a href="../tools/column.html"><strong aria-hidden="true">1.16.</strong> column</a></li><li class="chapter-item expanded "><a href="../tools/sort.html"><strong aria-hidden="true">1.17.</strong> sort</a></li><li class="chapter-item expanded "><a href="../tools/sed.html"><strong aria-hidden="true">1.18.</strong> sed</a></li><li class="chapter-item expanded "><a href="../tools/gnuplot.html"><strong aria-hidden="true">1.19.</strong> gnuplot</a></li></ol></li><li class="chapter-item expanded "><a href="../monitor/index.html"><strong aria-hidden="true">2.</strong> Resource analysis & monitor</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../monitor/lsof.html"><strong aria-hidden="true">2.1.</strong> lsof</a></li><li class="chapter-item expanded "><a href="../monitor/ss.html"><strong aria-hidden="true">2.2.</strong> ss</a></li><li class="chapter-item expanded "><a href="../monitor/pidstat.html"><strong aria-hidden="true">2.3.</strong> pidstat</a></li><li class="chapter-item expanded "><a href="../monitor/pgrep.html"><strong aria-hidden="true">2.4.</strong> pgrep</a></li><li class="chapter-item expanded "><a href="../monitor/ps.html"><strong aria-hidden="true">2.5.</strong> ps</a></li><li class="chapter-item expanded "><a href="../monitor/pmap.html"><strong aria-hidden="true">2.6.</strong> pmap</a></li><li class="chapter-item expanded "><a href="../monitor/pstack.html"><strong aria-hidden="true">2.7.</strong> pstack</a></li></ol></li><li class="chapter-item expanded "><a href="../trace_profile/index.html"><strong aria-hidden="true">3.</strong> Trace and Profile</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../trace_profile/time.html"><strong aria-hidden="true">3.1.</strong> time</a></li><li class="chapter-item expanded "><a href="../trace_profile/strace.html"><strong aria-hidden="true">3.2.</strong> strace</a></li><li class="chapter-item expanded "><a href="../trace_profile/ltrace.html"><strong aria-hidden="true">3.3.</strong> ltrace</a></li><li class="chapter-item expanded "><a href="../trace_profile/perf.html"><strong aria-hidden="true">3.4.</strong> perf</a></li><li class="chapter-item expanded "><a href="../trace_profile/oprofile.html"><strong aria-hidden="true">3.5.</strong> OProfile</a></li><li class="chapter-item expanded "><a href="../trace_profile/callgrind.html"><strong aria-hidden="true">3.6.</strong> callgrind</a></li></ol></li><li class="chapter-item expanded "><a href="../binary/index.html"><strong aria-hidden="true">4.</strong> Binary</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../binary/od.html"><strong aria-hidden="true">4.1.</strong> od</a></li><li class="chapter-item expanded "><a href="../binary/xxd.html"><strong aria-hidden="true">4.2.</strong> xxd</a></li><li class="chapter-item expanded "><a href="../binary/readelf.html"><strong aria-hidden="true">4.3.</strong> readelf</a></li><li class="chapter-item expanded "><a href="../binary/objdump.html"><strong aria-hidden="true">4.4.</strong> objdump</a></li><li class="chapter-item expanded "><a href="../binary/nm.html"><strong aria-hidden="true">4.5.</strong> nm</a></li></ol></li><li class="chapter-item expanded "><a href="../development/index.html"><strong aria-hidden="true">5.</strong> Development</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../development/c++filt.html"><strong aria-hidden="true">5.1.</strong> c++filt</a></li><li class="chapter-item expanded "><a href="../development/c++.html"><strong aria-hidden="true">5.2.</strong> c++</a></li><li class="chapter-item expanded "><a href="../development/glibc.html"><strong aria-hidden="true">5.3.</strong> glibc</a></li><li class="chapter-item expanded "><a href="../development/gcc.html"><strong aria-hidden="true">5.4.</strong> gcc</a></li><li class="chapter-item expanded "><a href="../development/cmake.html"><strong aria-hidden="true">5.5.</strong> cmake</a></li><li class="chapter-item expanded "><a href="../development/make.html"><strong aria-hidden="true">5.6.</strong> make</a></li><li class="chapter-item expanded "><a href="../development/ld.so.html"><strong aria-hidden="true">5.7.</strong> ld.so</a></li><li class="chapter-item expanded "><a href="../development/symbolver.html"><strong aria-hidden="true">5.8.</strong> symbol versioning</a></li><li class="chapter-item expanded "><a href="../development/python.html"><strong aria-hidden="true">5.9.</strong> python</a></li><li class="chapter-item expanded "><a href="../development/gcov.html"><strong aria-hidden="true">5.10.</strong> gcov</a></li><li class="chapter-item expanded "><a href="../development/pgo.html"><strong aria-hidden="true">5.11.</strong> pgo</a></li></ol></li><li class="chapter-item expanded "><a href="../linux/index.html"><strong aria-hidden="true">6.</strong> Linux</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../linux/systemd.html"><strong aria-hidden="true">6.1.</strong> systemd</a></li><li class="chapter-item expanded "><a href="../linux/coredump.html"><strong aria-hidden="true">6.2.</strong> coredump</a></li><li class="chapter-item expanded "><a href="../linux/ptrace_scope.html"><strong aria-hidden="true">6.3.</strong> ptrace_scope</a></li><li class="chapter-item expanded "><a href="../linux/cryptsetup.html"><strong aria-hidden="true">6.4.</strong> cryptsetup</a></li><li class="chapter-item expanded "><a href="../linux/swap.html"><strong aria-hidden="true">6.5.</strong> swap</a></li><li class="chapter-item expanded "><a href="../linux/input.html"><strong aria-hidden="true">6.6.</strong> input</a></li><li class="chapter-item expanded "><a href="../linux/acl.html"><strong aria-hidden="true">6.7.</strong> acl</a></li><li class="chapter-item expanded "><a href="../linux/zfs.html"><strong aria-hidden="true">6.8.</strong> zfs</a></li></ol></li><li class="chapter-item expanded "><a href="../network/index.html"><strong aria-hidden="true">7.</strong> Network</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../network/tcpdump.html"><strong aria-hidden="true">7.1.</strong> tcpdump</a></li><li class="chapter-item expanded "><a href="../network/tshark.html"><strong aria-hidden="true">7.2.</strong> tshark</a></li><li class="chapter-item expanded "><a href="../network/firewall-cmd.html"><strong aria-hidden="true">7.3.</strong> firewall-cmd</a></li><li class="chapter-item expanded "><a href="../network/nftables.html"><strong aria-hidden="true">7.4.</strong> nftables</a></li></ol></li><li class="chapter-item expanded "><a href="../web/index.html"><strong aria-hidden="true">8.</strong> Web</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../web/html.html" class="active"><strong aria-hidden="true">8.1.</strong> html</a></li><li class="chapter-item expanded "><a href="../web/css.html"><strong aria-hidden="true">8.2.</strong> css</a></li><li class="chapter-item expanded "><a href="../web/chartjs.html"><strong aria-hidden="true">8.3.</strong> chartjs</a></li></ol></li><li class="chapter-item expanded "><a href="../arch/index.html"><strong aria-hidden="true">9.</strong> Arch</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../arch/x86_64.html"><strong aria-hidden="true">9.1.</strong> x86_64</a></li><li class="chapter-item expanded "><a href="../arch/arm64.html"><strong aria-hidden="true">9.2.</strong> arm64</a></li><li class="chapter-item expanded "><a href="../arch/armv7.html"><strong aria-hidden="true">9.3.</strong> armv7</a></li><li class="chapter-item expanded "><a href="../arch/riscv.html"><strong aria-hidden="true">9.4.</strong> riscv</a></li></ol></li></ol>
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                        <h1 id="html"><a class="header" href="#html">html</a></h1>
<h2 id="collapsible-element"><a class="header" href="#collapsible-element">Collapsible element</a></h2>
<p><a href="src/details.html">Rendered html</a></p>
<pre><code class="language-html">&lt;details&gt;
  &lt;summary&gt;Some text goes here&lt;/summary&gt;
  ... some more text goes here.
&lt;/details&gt;
</code></pre>
<blockquote>
<p>With the <code>open</code> attribute <code>&lt;details open&gt;</code> the details are unfolded by default.</p>
</blockquote>
<h1 id="minimal-2-column-layout"><a class="header" href="#minimal-2-column-layout">Minimal 2 column layout</a></h1>
<p><a href="src/grid-2col.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.grid-2col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1em
}
.col1 {
  grid-column-start: 1;
  background-color: red;
  padding-left: 1em;
}
.col2 {
  grid-column-start: 2;
  background-color: green;
  padding-left: 1em;
}
&lt;/style&gt;
&lt;div class="grid-2col"&gt;
  &lt;div class="col1"&gt;
    &lt;p&gt;Some text in the first column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="col2"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-grid-area"><a class="header" href="#minimal-grid-area">Minimal grid area</a></h1>
<p><a href="src/grid-area.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.page-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  grid-template-areas:
      "h h"
      "s m"
      "f f";
  gap: 1em;
}
.gh {
  grid-area: h;
  background-color: orange;
}
.gs {
  grid-area: s;
  background-color: green;
}
.gm {
  grid-area: m;
  background-color: gray;
}
.gf {
  grid-area: f;
  background-color: yellow;
}
.nav-items {
  display: flex;                  /* flexbox model =&gt; flexible layout on row */
  justify-content: space-around;  /* align flex boxes horizontally with space around */
  align-items: center;            /* center flex items vertically */
  list-style: none;
}
p {
  margin: 1em;
}
&lt;/style&gt;
&lt;div class="page-grid"&gt;
  &lt;div class="gh"&gt;
      &lt;ul class="nav-items"&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;aa&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;bb&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;cc&lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="gs"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gm"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gf"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;

</code></pre>
<h1 id="minimal-tabs"><a class="header" href="#minimal-tabs">Minimal tabs</a></h1>
<p><a href="src/tabs.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
const showTab = (E, T) =&gt; {
    const TABS = Array.from(document.getElementsByClassName("content"));
    TABS.forEach(T =&gt; {
        T.style.display = "none";
    });

    document.getElementById(T).style.display = "block";
};

window.onload = () =&gt; {
    document.getElementById("bTab1").onclick = (E) =&gt; {
        showTab(E, "tTab1");
    };
    document.getElementById("bTab2").onclick = (E) =&gt; {
        showTab(E, "tTab2");
    };
}
&lt;/script&gt;

&lt;button type="button" id="bTab1"&gt;Tab1&lt;/button&gt;
&lt;button type="button" id="bTab2"&gt;Tab2&lt;/button&gt;

&lt;div id="tTab1" class="content" style="display: block;"&gt;
    &lt;p&gt;Some content goes here ...&lt;/p&gt;
&lt;/div&gt;

&lt;div id="tTab2" class="content" style="display: none;"&gt;
    &lt;p&gt;... and there.&lt;/p&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-tags-filter"><a class="header" href="#minimal-tags-filter">Minimal tags filter</a></h1>
<p><a href="src/tags.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
/// Map HTML elements to display kinds.
const elementToDisplay = (E) =&gt; {
    switch (E.nodeName) {
        case "LI":
            return "list-item";
        default:
            return "block";
    }
}

/// Display only elements with tag T.
const showTag = (T) =&gt; {
    Array.from(document.getElementsByClassName("content")).forEach(E =&gt; {
        E.style.display = "none";
    });

    Array.from(document.getElementsByClassName(T)).forEach(E =&gt; {
        E.style.display = elementToDisplay(E);
    });
};

/// Initialize buttons and callbacks.
window.onload = () =&gt; {
    // Handle to the filter placeholder.
    const filter = document.getElementById("filter");

    // Create buttons for each tag T.
    ["arm", "x86", "clear"].forEach(T =&gt; {
        const btn = document.createElement("button");
        btn.innerHTML = T;
        btn.onclick = T === "clear"
            ? (E) =&gt; {
                showTag("content");
                filter.innerHTML = "";
            }
            : (E) =&gt; {
                showTag(T);
                filter.innerHTML = `&lt;p&gt;filter: &lt;mark&gt;${T}&lt;/mark&gt;&lt;/p&gt;`;
            };

        document.body.prepend(btn);
    });
}
&lt;/script&gt;

&lt;div id = "filter"&gt;&lt;/div&gt;

&lt;ul&gt;
    &lt;li class = "content arm"&gt;arm 1&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 2&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 3&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 1&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 2&lt;/li&gt;
    &lt;li class = "content x86 arm"&gt;x86 + arm&lt;/li&gt;
&lt;/ul&gt;

&lt;div class = "content arm"&gt;arm&lt;/div&gt;
&lt;div class = "content arm x86"&gt;arm x86&lt;/div&gt;
&lt;div class = "content x86"&gt;x86&lt;/div&gt;
</code></pre>

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                <ol class="chapter"><li class="chapter-item expanded affix "><a href="../intro.html">Introduction</a></li><li class="chapter-item expanded "><a href="../tools/index.html"><strong aria-hidden="true">1.</strong> Tools</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../tools/zsh.html"><strong aria-hidden="true">1.1.</strong> zsh</a></li><li class="chapter-item expanded "><a href="../tools/bash.html"><strong aria-hidden="true">1.2.</strong> bash</a></li><li class="chapter-item expanded "><a href="../tools/fish.html"><strong aria-hidden="true">1.3.</strong> fish</a></li><li class="chapter-item expanded "><a href="../tools/tmux.html"><strong aria-hidden="true">1.4.</strong> tmux</a></li><li class="chapter-item expanded "><a href="../tools/git.html"><strong aria-hidden="true">1.5.</strong> git</a></li><li class="chapter-item expanded "><a href="../tools/awk.html"><strong aria-hidden="true">1.6.</strong> awk</a></li><li class="chapter-item expanded 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href="../tools/ffmpeg.html"><strong aria-hidden="true">1.15.</strong> ffmpeg</a></li><li class="chapter-item expanded "><a href="../tools/column.html"><strong aria-hidden="true">1.16.</strong> column</a></li><li class="chapter-item expanded "><a href="../tools/sort.html"><strong aria-hidden="true">1.17.</strong> sort</a></li><li class="chapter-item expanded "><a href="../tools/sed.html"><strong aria-hidden="true">1.18.</strong> sed</a></li><li class="chapter-item expanded "><a href="../tools/gnuplot.html"><strong aria-hidden="true">1.19.</strong> gnuplot</a></li></ol></li><li class="chapter-item expanded "><a href="../monitor/index.html"><strong aria-hidden="true">2.</strong> Resource analysis & monitor</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../monitor/lsof.html"><strong aria-hidden="true">2.1.</strong> lsof</a></li><li class="chapter-item expanded "><a href="../monitor/ss.html"><strong aria-hidden="true">2.2.</strong> ss</a></li><li class="chapter-item expanded "><a href="../monitor/pidstat.html"><strong aria-hidden="true">2.3.</strong> pidstat</a></li><li class="chapter-item expanded "><a href="../monitor/pgrep.html"><strong aria-hidden="true">2.4.</strong> pgrep</a></li><li class="chapter-item expanded "><a href="../monitor/ps.html"><strong aria-hidden="true">2.5.</strong> ps</a></li><li class="chapter-item expanded "><a href="../monitor/pmap.html"><strong aria-hidden="true">2.6.</strong> pmap</a></li><li class="chapter-item expanded "><a href="../monitor/pstack.html"><strong aria-hidden="true">2.7.</strong> pstack</a></li></ol></li><li class="chapter-item expanded "><a href="../trace_profile/index.html"><strong aria-hidden="true">3.</strong> Trace and Profile</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../trace_profile/time.html"><strong aria-hidden="true">3.1.</strong> time</a></li><li class="chapter-item expanded "><a href="../trace_profile/strace.html"><strong aria-hidden="true">3.2.</strong> strace</a></li><li class="chapter-item expanded "><a href="../trace_profile/ltrace.html"><strong aria-hidden="true">3.3.</strong> ltrace</a></li><li class="chapter-item expanded "><a href="../trace_profile/perf.html"><strong aria-hidden="true">3.4.</strong> perf</a></li><li class="chapter-item expanded "><a href="../trace_profile/oprofile.html"><strong aria-hidden="true">3.5.</strong> OProfile</a></li><li class="chapter-item expanded "><a href="../trace_profile/callgrind.html"><strong aria-hidden="true">3.6.</strong> callgrind</a></li></ol></li><li class="chapter-item expanded "><a href="../binary/index.html"><strong aria-hidden="true">4.</strong> Binary</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../binary/od.html"><strong aria-hidden="true">4.1.</strong> od</a></li><li class="chapter-item expanded "><a href="../binary/xxd.html"><strong aria-hidden="true">4.2.</strong> xxd</a></li><li class="chapter-item expanded "><a href="../binary/readelf.html"><strong aria-hidden="true">4.3.</strong> readelf</a></li><li class="chapter-item expanded "><a href="../binary/objdump.html"><strong aria-hidden="true">4.4.</strong> objdump</a></li><li class="chapter-item expanded "><a href="../binary/nm.html"><strong aria-hidden="true">4.5.</strong> nm</a></li></ol></li><li class="chapter-item expanded "><a href="../development/index.html"><strong aria-hidden="true">5.</strong> Development</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../development/c++filt.html"><strong aria-hidden="true">5.1.</strong> c++filt</a></li><li class="chapter-item expanded "><a href="../development/c++.html"><strong aria-hidden="true">5.2.</strong> c++</a></li><li class="chapter-item expanded "><a href="../development/glibc.html"><strong aria-hidden="true">5.3.</strong> glibc</a></li><li class="chapter-item expanded "><a href="../development/gcc.html"><strong aria-hidden="true">5.4.</strong> gcc</a></li><li class="chapter-item expanded "><a href="../development/cmake.html"><strong aria-hidden="true">5.5.</strong> cmake</a></li><li class="chapter-item expanded "><a href="../development/make.html"><strong aria-hidden="true">5.6.</strong> make</a></li><li class="chapter-item expanded "><a href="../development/ld.so.html"><strong aria-hidden="true">5.7.</strong> ld.so</a></li><li class="chapter-item expanded "><a href="../development/symbolver.html"><strong aria-hidden="true">5.8.</strong> symbol versioning</a></li><li class="chapter-item expanded "><a href="../development/python.html"><strong aria-hidden="true">5.9.</strong> python</a></li><li class="chapter-item expanded "><a href="../development/gcov.html"><strong aria-hidden="true">5.10.</strong> gcov</a></li><li class="chapter-item expanded "><a href="../development/pgo.html"><strong aria-hidden="true">5.11.</strong> pgo</a></li></ol></li><li class="chapter-item expanded "><a href="../linux/index.html"><strong aria-hidden="true">6.</strong> Linux</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../linux/systemd.html"><strong aria-hidden="true">6.1.</strong> systemd</a></li><li class="chapter-item expanded "><a href="../linux/coredump.html"><strong aria-hidden="true">6.2.</strong> coredump</a></li><li class="chapter-item expanded "><a href="../linux/ptrace_scope.html"><strong aria-hidden="true">6.3.</strong> ptrace_scope</a></li><li class="chapter-item expanded "><a href="../linux/cryptsetup.html"><strong aria-hidden="true">6.4.</strong> cryptsetup</a></li><li class="chapter-item expanded "><a href="../linux/swap.html"><strong aria-hidden="true">6.5.</strong> swap</a></li><li class="chapter-item expanded "><a href="../linux/input.html"><strong aria-hidden="true">6.6.</strong> input</a></li><li class="chapter-item expanded "><a href="../linux/acl.html"><strong aria-hidden="true">6.7.</strong> acl</a></li><li class="chapter-item expanded "><a href="../linux/zfs.html"><strong aria-hidden="true">6.8.</strong> zfs</a></li></ol></li><li class="chapter-item expanded "><a href="../network/index.html"><strong aria-hidden="true">7.</strong> Network</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../network/tcpdump.html"><strong aria-hidden="true">7.1.</strong> tcpdump</a></li><li class="chapter-item expanded "><a href="../network/tshark.html"><strong aria-hidden="true">7.2.</strong> tshark</a></li><li class="chapter-item expanded "><a href="../network/firewall-cmd.html"><strong aria-hidden="true">7.3.</strong> firewall-cmd</a></li><li class="chapter-item expanded "><a href="../network/nftables.html"><strong aria-hidden="true">7.4.</strong> nftables</a></li></ol></li><li class="chapter-item expanded "><a href="../web/index.html"><strong aria-hidden="true">8.</strong> Web</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../web/html.html" class="active"><strong aria-hidden="true">8.1.</strong> html</a></li><li class="chapter-item expanded "><a href="../web/css.html"><strong aria-hidden="true">8.2.</strong> css</a></li><li class="chapter-item expanded "><a href="../web/chartjs.html"><strong aria-hidden="true">8.3.</strong> chartjs</a></li></ol></li><li class="chapter-item expanded "><a href="../arch/index.html"><strong aria-hidden="true">9.</strong> Arch</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../arch/x86_64.html"><strong aria-hidden="true">9.1.</strong> x86_64</a></li><li class="chapter-item expanded "><a href="../arch/arm64.html"><strong aria-hidden="true">9.2.</strong> arm64</a></li><li class="chapter-item expanded "><a href="../arch/armv7.html"><strong aria-hidden="true">9.3.</strong> armv7</a></li><li class="chapter-item expanded "><a href="../arch/riscv.html"><strong aria-hidden="true">9.4.</strong> riscv</a></li></ol></li></ol>
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                        <h1 id="html"><a class="header" href="#html">html</a></h1>
<h2 id="collapsible-element"><a class="header" href="#collapsible-element">Collapsible element</a></h2>
<p><a href="src/details.html">Rendered html</a></p>
<pre><code class="language-html">&lt;details&gt;
  &lt;summary&gt;Some text goes here&lt;/summary&gt;
  ... some more text goes here.
&lt;/details&gt;
</code></pre>
<blockquote>
<p>With the <code>open</code> attribute <code>&lt;details open&gt;</code> the details are unfolded by default.</p>
</blockquote>
<h1 id="minimal-2-column-layout"><a class="header" href="#minimal-2-column-layout">Minimal 2 column layout</a></h1>
<p><a href="src/grid-2col.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.grid-2col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1em
}
.col1 {
  grid-column-start: 1;
  background-color: red;
  padding-left: 1em;
}
.col2 {
  grid-column-start: 2;
  background-color: green;
  padding-left: 1em;
}
&lt;/style&gt;
&lt;div class="grid-2col"&gt;
  &lt;div class="col1"&gt;
    &lt;p&gt;Some text in the first column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="col2"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-grid-area"><a class="header" href="#minimal-grid-area">Minimal grid area</a></h1>
<p><a href="src/grid-area.html">Rendered html</a></p>
<pre><code class="language-html">&lt;style&gt;
.page-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  grid-template-areas:
      "h h"
      "s m"
      "f f";
  gap: 1em;
}
.gh {
  grid-area: h;
  background-color: orange;
}
.gs {
  grid-area: s;
  background-color: green;
}
.gm {
  grid-area: m;
  background-color: gray;
}
.gf {
  grid-area: f;
  background-color: yellow;
}
.nav-items {
  display: flex;                  /* flexbox model =&gt; flexible layout on row */
  justify-content: space-around;  /* align flex boxes horizontally with space around */
  align-items: center;            /* center flex items vertically */
  list-style: none;
}
p {
  margin: 1em;
}
&lt;/style&gt;
&lt;div class="page-grid"&gt;
  &lt;div class="gh"&gt;
      &lt;ul class="nav-items"&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;aa&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;bb&lt;/a&gt;&lt;/li&gt;
          &lt;li class="nav-item"&gt;&lt;a href=""&gt;cc&lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  &lt;div class="gs"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gm"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="gf"&gt;
    &lt;p&gt;Some text in the second column.&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;

</code></pre>
<h1 id="minimal-tabs"><a class="header" href="#minimal-tabs">Minimal tabs</a></h1>
<p><a href="src/tabs.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
const showTab = (E, T) =&gt; {
    const TABS = Array.from(document.getElementsByClassName("content"));
    TABS.forEach(T =&gt; {
        T.style.display = "none";
    });

    document.getElementById(T).style.display = "block";
};

window.onload = () =&gt; {
    document.getElementById("bTab1").onclick = (E) =&gt; {
        showTab(E, "tTab1");
    };
    document.getElementById("bTab2").onclick = (E) =&gt; {
        showTab(E, "tTab2");
    };
}
&lt;/script&gt;

&lt;button type="button" id="bTab1"&gt;Tab1&lt;/button&gt;
&lt;button type="button" id="bTab2"&gt;Tab2&lt;/button&gt;

&lt;div id="tTab1" class="content" style="display: block;"&gt;
    &lt;p&gt;Some content goes here ...&lt;/p&gt;
&lt;/div&gt;

&lt;div id="tTab2" class="content" style="display: none;"&gt;
    &lt;p&gt;... and there.&lt;/p&gt;
&lt;/div&gt;
</code></pre>
<h1 id="minimal-tags-filter"><a class="header" href="#minimal-tags-filter">Minimal tags filter</a></h1>
<p><a href="src/tags.html">Rendered html</a></p>
<pre><code class="language-html">&lt;script&gt;
/// Map HTML elements to display kinds.
const elementToDisplay = (E) =&gt; {
    switch (E.nodeName) {
        case "LI":
            return "list-item";
        default:
            return "block";
    }
}

/// Display only elements with tag T.
const showTag = (T) =&gt; {
    Array.from(document.getElementsByClassName("content")).forEach(E =&gt; {
        E.style.display = "none";
    });

    Array.from(document.getElementsByClassName(T)).forEach(E =&gt; {
        E.style.display = elementToDisplay(E);
    });
};

/// Initialize buttons and callbacks.
window.onload = () =&gt; {
    // Handle to the filter placeholder.
    const filter = document.getElementById("filter");

    // Create buttons for each tag T.
    ["arm", "x86", "clear"].forEach(T =&gt; {
        const btn = document.createElement("button");
        btn.innerHTML = T;
        btn.onclick = T === "clear"
            ? (E) =&gt; {
                showTag("content");
                filter.innerHTML = "";
            }
            : (E) =&gt; {
                showTag(T);
                filter.innerHTML = `&lt;p&gt;filter: &lt;mark&gt;${T}&lt;/mark&gt;&lt;/p&gt;`;
            };

        document.body.prepend(btn);
    });
}
&lt;/script&gt;

&lt;div id = "filter"&gt;&lt;/div&gt;

&lt;ul&gt;
    &lt;li class = "content arm"&gt;arm 1&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 2&lt;/li&gt;
    &lt;li class = "content arm"&gt;arm 3&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 1&lt;/li&gt;
    &lt;li class = "content x86"&gt;x86 2&lt;/li&gt;
    &lt;li class = "content x86 arm"&gt;x86 + arm&lt;/li&gt;
&lt;/ul&gt;

&lt;div class = "content arm"&gt;arm&lt;/div&gt;
&lt;div class = "content arm x86"&gt;arm x86&lt;/div&gt;
&lt;div class = "content x86"&gt;x86&lt;/div&gt;
</code></pre>

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