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Sketches & Ink
Sketch diagrams inside any note with an Excalidraw canvas, or switch on the ink overlay and draw over text, images and PDFs — every drawing becomes part of your second brain.
The LAD runs in the anterior interventricular groove and supplies the anterior two-thirds of the septum.
Ink off — keyboard active, annotations stay in place
The problem
Coronary anatomy, dermatomes, treatment algorithms — spatial knowledge resists sentences. Yet most note apps treat drawing as someone else’s job, in someone else’s window.
A paragraph can describe the coronary tree; it can’t show it. Layout, branching and territory live in pictures, not prose.
Sketch in a drawing tool, screenshot, paste — and the drawing arrives dead: a static image divorced from the note it explains.
Lecture slides and papers arrive as read-only PDFs, so annotation happens on paper printouts or not at all.
A canvas inside every note
Drop a drawing block into any document and a genuine Excalidraw canvas opens inline — the same fast, hand-drawn feel the whole internet sketches with. Diagram a treatment algorithm, sketch an anatomical relationship or map a mechanism, right between your paragraphs.
Type /sketch in any note to open a canvas — as many blocks as you need
Ink over anything
The ink overlay floats above your entire document, so you can draw over text, images — and PDFs. Circle a finding on a scan, underline a passage, annotate a paper directly. A pen toggle switches drawing on and off, so ink never blocks normal typing and editing.
Section 6 · Treatment in the acute phase
Initiation of anticoagulation is recommended without delay in patients with high or intermediate clinical probability, while diagnostic workup is in progress.
My note: start LMWH at intermediate-high probability
Ink off — typing continues, annotations untouched
Drawings that belong to your brain
A drawing in Suture is not a decoration — it’s a node. Sketches join your second medical brain as first-class citizens of the knowledge graph, rendered distinctly so you can spot visual knowledge at a glance and watch it grow alongside your written notes.
Second brain · this week
Sketch nodeDrawn once in a note — linked forever in the graph
Coronary trees, dermatomes and treatment algorithms live in pictures — a pen inside your notes keeps spatial knowledge where the rest of your knowledge already is.
Notes without a pen
With Sketches & Ink
Learning research shows drawing helps memory more than writing alone — Suture makes it a native part of note-taking instead of a detour through another app.
Four steps from a blank paragraph to an annotated page — and a sketch that lives on as a node in your second brain.
Drop an Excalidraw block into a note and draw the concept.
Toggle the ink layer and annotate over text, images or a PDF.
Toggle back and keep typing — every stroke stays in place.
Your sketch appears as its own node in your second brain.
The drawing effect is a robust finding — sketching helps memory beyond writing alone.
Sketch inside your notes, ink over anything on the page, and let every drawing join your growing second medical brain.
Free forever for students · No credit card required