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| Button | Description |
|---|---|
 | Show endpoint dots in image |
 | Use Zoom Cursor in drawing (left click zooms in, right click zooms out) |
 | Zoom Window (click and drag to specify a window to zoom in on) |
 | Pan (click and drag in preview window to pan the drawing) |
 | Zoom Extents (fit all drawing elements in the preview window) |