Presented here is an intriguing look at using FileMaker to create PDF files with precise control using LaTeX, a free, open source “document preparation system.” https://www.latex-project.org LaTeX offers precise typography, and is a favorite among researchers and mathematicians who need to prepare technical documentation. To be clear: this is an advanced technique that requires learning a new markup language. But since it is entirely text driven, you can easily integrate your FileMaker data with it. And there are tons of LaTeX templates available online, so you can probably find something close to what you need and modify from there.
You can create great reports and documents from a FileMaker Layout. Sometimes, you need something more advanced... so you might use MS Word. But sometimes you need something more advanced than that! LaTeX is an open source, advanced typesetting capability, favored by Scientist, Researchers, or people who need advanced typesetting capabilities. Here is an overview and demo file for using LaTeX.