pvgttm-web/src/layouts/partials/backLink.ejs

<%
var titlesBySection = {
    // top-level
    astral: "Astral Info",
    campaign: "Campaign Info",
    classes: "Character Classes",
    "magic-items": "Magic Items",
    planes: "Planar Cosmology",
    races: "Character Races",
    rules: "House Rules",

    // planes
    elemental: "Elemental Planes",
    material: "Material Planes",
    near: "Near Planes",
    transcendental: "Transcendental Planes",
},
unlistedSections = ['main'];

%>

<% if (page.subsection && page.path && !page.path.endsWith(`${page.subsection}/index.html`)) { %>
    <div class="sectionBackLink-wrapper">
        <a href="./index.html" class="sectionBackLink">
            &lt; Back to <%= titlesBySection[page.subsection]
                ?? page.subsection.charAt(0).toUpperCase() + page.subsection.slice(1) %>
        </a>
    </div>
<% } else if (page.section && page.section === 'licenses' && page.path && !page.path.endsWith(`${page.section}/index.html`)) { -%>
    <p>
        The latest version of this license can always be found at <a href="/<%=page.path%>"><%=site.uri%>/<%=page.path.replace('/index.html', '/')%></a>.
    </p>

<% } else if (page.section && !unlistedSections.includes(page.section) && page.path && !page.path.endsWith(`${page.section}/index.html`)) { -%>
    <div class="sectionBackLink-wrapper">
        <a href="/<%=page.section%>/index.html" class="sectionBackLink">
            &lt; Back to <%= titlesBySection[page.section] ?? page.section.charAt(0).toUpperCase() + page.section.slice(1) %>
        </a>
    </div>
<% } -%>