Lines
Create straight lines, curves, elbows, and orthogonal connectors with brush-style rendering and configurable markers. Switch to Lines via the toolbar.

Line type grid, brush selector, markers, size/opacity/color controls, and corner radius
Line Types
Four line types, selected from an icon grid in the create panel:
- Straight Line — a direct path between two endpoints
- Curve Line — a bezier curve with draggable control points
- Elbow Line — a path with a right-angle bend through a midpoint
- Orthogonal Line — horizontal and vertical segments routed through a midpoint, with optional corner rounding
Start and End Markers
Markers are independently configurable for the start and end of each line:
- None — no marker
- Arrow — a filled arrowhead (stroke-based)
- Circle — a circle marker (texture-based)
- Square — a square marker (texture-based)
- Triangle — a triangle marker (texture-based)
Shared Brush Engines
Lines use the same three rendering engines and the same over 60 brushes as Drawing and Shapes modes. The brush you select determines how the line is rendered:
- Ink — resolution-independent vector mesh strokes (WASM). Lines stay crisp at any zoom level.
- Vector effects — animated effects like Fire, Neon, Electric applied along the line path
- Raster — texture-based brushlib strokes for natural media textures
The brush dropdown in the Lines panel shows the full brush catalog, the same one available in Drawing and Shapes.
Controls
Ink and Vector Brushes
- Size — line thickness
- Opacity — stroke transparency
- Color — 12-slot palette (see Color Management)
Raster Brushes
- Radius — logarithmic brush radius
- Base Opacity — per-dab opacity
- Hardness — edge softness
- Opacity — stroke transparency
- Color — same 12-slot palette
Corner Radius
Orthogonal lines support corner rounding from 0 (sharp 90° corners) to 50 (rounded arcs). When corner radius is 0, each segment is rendered separately for crisp right-angle corners. Other line types do not support corner rounding.
Editing Lines
Select a line to open the edit panel. Drag endpoints or control points via gizmo handles to reshape the line. You can change the brush, size, opacity, color, markers, and corner radius. Lock or unlock the line position, or delete it from the edit panel.
Default Settings
New lines default to a straight line with no start marker and an arrow end marker.
Related
- Drawing — the brush engines and brushes used for line rendering
- Shapes — geometric shapes with the same brush rendering
- Color Management — palettes, Copic colors, and eyedropper
- Selection — select and edit lines