{{ if .Params.series }}
    {{ $cur_page_num := 1 }}
    {{ $total_page_num := 0 }}
    {{ $prev_link := "" }}
    {{ $prev_title := "" }}
    {{ $next_link := "" }}
    {{ $next_title := "" }}

    {{ range where .Site.RegularPages.ByDate "Params.series" .Params.series }}
        {{ $total_page_num = add $total_page_num 1 }}
        {{ if gt $.Date.Unix .Date.Unix }}
            {{ $cur_page_num = add $cur_page_num 1 }}
            {{ $prev_link = .Permalink }}
            {{ $prev_title = .Title }}
        {{ end }}
    {{ end }}
    {{ range where .Site.RegularPages.ByDate.Reverse "Params.series" .Params.series }}
        {{ if lt $.Date.Unix .Date.Unix }}
            {{ $next_link = .Permalink }}
            {{ $next_title = .Title }}
        {{ end }}
    {{ end }}
    {{ if or $next_link $prev_link }}
        <p>
            Part {{ $cur_page_num }} of {{ $total_page_num }} in the <b>{{ .Params.series }}</b> series.
        </p>
        <p>
        {{ if $prev_link }}
            <a href="{{ $prev_link }}"><i class="fa fa-angle-double-left"></i>&nbsp;Part {{ sub $cur_page_num 1 }}</a>
        {{ end }}
        {{ if and $next_link $prev_link }}
                |
        {{ end }}
        {{ if $next_link }}
            <a href="{{ $next_link }}">Part {{ add $cur_page_num 1 }}&nbsp;<i class="fa fa-angle-double-right"></i></a></p>
        {{ end }}
    {{ end }}
{{ end }}