<h4>Mask Mode</h4>
<table>
    <tr><td><kbd>Click + Drag</kbd></td><td>Paint on the mask</td></tr>
    <tr><td><kbd>Middle Mouse Button + Drag</kbd></td><td>Pan canvas view</td></tr>
    <tr><td><kbd>Mouse Wheel</kbd></td><td>Zoom view in/out</td></tr>
    <tr><td><strong>Brush Controls</strong></td><td>Use sliders to control brush <strong>Size</strong>, <strong>Strength</strong>, and <strong>Hardness</strong></td></tr>
    <tr><td><strong>Clear Mask</strong></td><td>Remove the entire mask</td></tr>
    <tr><td><strong>Exit Mode</strong></td><td>Click the "Draw Mask" button again</td></tr>
</table>
