Read, highlight, write
Textbooks, papers, assignments, and scans are part of taking notes — not a side quest in another app. In Penink, a PDF can sit next to Lecture 01 in Biology, and you can highlight and write on it with the same stylus you use on lined or grid paper.
Split a textbook with a notebook
Open the PDF on one side and a handwritten notebook on the other. That is the tablet layout Penink is built for: reading and writing at the same time, at a size your hand can use.
Filed, not floating
A highlighted PDF is only useful if you can find it next semester. Because Penink is an explorer, the document lives in University / 2026 / Semester 1 — beside the notes that refer to it.
