Section 28.3 Permalinks
If you place a mouse pointer in the left margin, to the left of a heading for an item, then an icon with two links of a chain will appear. This is a link to the item. Instead of a doing a right-click for a context menu that has an option like “Copy Link Location”, rather do a normal (left-) click. This will copy the heading (“Example 4.5 Chameleon Colors”), and also the link itself, to your clipboard, along with some formatting. You can then paste this into course materials, or email it to a reader who had a question.
You might want to make this feature known to your readers, perhaps via a preface explaining some of the more novel features of the HTML version of a PreTeXt document.