Handwriting notetaking application (GTK3) that annotates directly on top of imported PDFs: highlight, underline, or strike through selected/copied PDF background text, follow hyperlinks in the background PDF, and export the annotated result to SVG, PNG, or PDF from either the GUI or the command line. Supports pressure-sensitive pen and stylus input (e.g. Wacom tablets), positioning it as an open-source alternative to note-taking apps like GoodNotes or Notability.