Draw a polygon: click to add vertices Select a solver: select a solver and click Solve Change objective: drag it or click Rotate Objective Add new vertices: double‐click an edge Move vertices: drag vertices to reshape Press S: toggle snapping to the grid 3D Mode: click 3D button, hold Shift+drag to rotate view Z Scale: adjust slider to scale z-axis Reset: refresh the page Undo/Redo: ⌘+z to undo, ⇧⌘+z to redo