Annotate   Tool Freehand Ellipse Rectangle Line Arrow Circle Measure Ellipse Measure Rect Measure Line Measure Circle   Eraser   Label 1 (Red) 2 (Green) 3 (Blue) 4 (Yellow)   Brush 2.0   Fill   Stroke   Undo Redo Clear   Show in 3D   Ann Opacity   Vol Opacity   Save Doc Load Doc   WebGPU