Understanding Org's LaTeX previews
Summary
This article provides an in-depth look at Org-mode's LaTeX preview system in Emacs, explaining the architecture (frontend overlays, backend processes, and the extended-info data flow) and how asynchronous, real-time previews are achieved. It covers precompilation, caching, process filters and sentinels, and the reactive hooks that drive live updates, making it a valuable reference for Emacs package authors and OSS developers.