Appearance
Drawing Tools
Use the brush to paint annotations and the eraser to remove them. Keyboard shortcuts provide quick access.
Available Tools
Brush (B)
Paints with the currently selected class color. Click and drag to draw continuous strokes. The brush respects the current brush size setting.
Eraser (E)
Removes annotations by painting with transparent (background). Useful for correcting mistakes or refining boundaries.
Keyboard Shortcuts
B - Switch to brush tool
E - Switch to eraser tool
[ - Decrease brush size
] - Increase brush size
Ctrl+Z - Undo last stroke
Ctrl+Y - Redo undone stroke
Left/Right arrows - Navigate between slices