RichTeXtFX[1] has these abilities[2] along with demo code[3] that provides an entry point for sleuthing. My text editor, KeenWrite[4], uses RichTeXtFX, but take

RichTeXtFX[1] has these abilities[2] along with demo code[3] that provides an entry point for sleuthing. My text editor, KeenWrite[4], uses RichTeXtFX, but takes a different approach due to its usage of inline variable references. Rather than edit the document in a WYSIWYG-like fashion, users edit the Markdown document as plain text then export as PDF by selecting a theme to apply for typesetting. This cleanly separates content from presentation. The "themes" video tutorial demonstrates how theme selection works.[5] [1]: https://github.com/FXMisc/RichTextFX/tree/master/richtextfx/src/main/java/org/fxmisc/richtext https://github.com/FXMisc/RichTextFX/tree/master/richtextfx/... [2]: https://gluonhq.com/presenting-a-new-richtextarea-control/ https://gluonhq.com/presenting-a-new-richtextarea-control/ [3]: https://github.com/gluonhq/rich-text-area/blob/master/samples/src/main/java/com/gluonhq/richtextarea/samples/RichTextEditorDemo.java https://github.com/gluonhq/rich-text-area/blob/master/sample... [4]: https://github.com/DaveJarvis/keenwrite https://github.com/DaveJarvis/keenwrite [5]: https://www.youtube.com/watch?v=3QpX70O5S30&list=PLB-WIt1cZYLm1MMx2FBG9KWzPIoWZMKu_&index=9 https://www.youtube.com/watch?v=3QpX70O5S30&list=PLB-WIt1cZY...