Question: How do I add a link to a PDF in the content, so that it downloads rather than opens in the browser windows? (I've uploaded the PDF to the media library and can insert the link but can't find an option to prevent it opening in the browser window).

Thanks,

Lucy

Answer: 
Actually, that's entirely dependent on the browser. Some browsers will open a PDF in the window using a built-in PDF reader (most use the Adobe plug-in, Google Chrome has its own). If the plug-in is missing, though, the browser will attempt to download the file instead.

Your safest bet is to add instructions on the page for the user to right-click and select "save as."

If you're concerned about users not being able to get back to the page after they click a link, add `target="_blank"` to the link and it will force the browser to open the link in a new tab or window. Sometimes, this can be enough to trigger a download instead as well.

Eg: `<a href="http://site.url/document.pdf" target="_blank">Download PDF</a>`.
Just use the a tag's download attribute: <https://www.w3schools.com/tags/att_a_download.asp>