To draw:

• Click the Pen icon to select the pen mode.
• Press and hold the Ctrl key and move the cursor inside the canvas to draw.
• Release the Ctrl key when you want to move the cursor without drawing.
• Use the pen slider to change Pen size.

To erase:

• Click the Eraser icon to select the erase mode.
• Press and hold the Ctrl key and move the cursor inside the canvas to erase.
• Release the Ctrl key when you want to move the cursor without erasing.
• Use the eraser slider to change eraser size.

To clear:

• Click the clear icon to clear the board.