Purpose: This document explains how to render backlinks in your Firn layouts.
Backlinks are used to display a list of links to the current document you are reading.
A document has backlinks if an org-mode file links to another org-mode file using a "file" link.
The above will render a list of backlinks. However, you may want to check first if backlinks exist. The below code samples creates a backlinks section, with a bit of styling and a headline to indicate the sections intent:
(when-let [backlinks (render :backlinks)] ; if backlinks exist, store them in a let bindings. [:div [:hr] [:div.backlinks [:h4 "Backlinks to this document:"] backlinks]])