# Display GUI Controls

The Display WebPage control element has a set of buttons at the top of its window, and a pan vision system at the top right corner of the displayed image.

The available controls are described below.

Button | Description
| Increase the level of magnification on the image.
| Decrease the level of magnification on the image.
| Fit the image to the display. The image will automatically scale to be maximally displayed in the Display control, with the entire image visible. The original aspect ratio of the image is also maintained, therefore some empty (gray) space may exist around the image.
| Fill the entire display with the image. When used, no empty space will appear around the image, but a portion of the image may be cropped (not visible) to achieve this.
| Rotates the image left by 90 degrees.
| Rotates the image right by 90 degrees.
| Shows or hides the pan vision system on the top right corner of the image.
| When enabled, the mouse cursor changes to a crosshair above the acquired image, and an information panel appears next to it, showing the RGB values of the pixel currently selected by the crosshair. The information shown in the information panel includes the X and Y coordinates of the selected pixel, along with its red, green and blue values. Note: This feature is disabled by default, and is automatically disabled when going online. Enabling this feature may affect the browser's performance. The values calculated by this feature are only available while online, and are not saved with the job.
| Pans the image left, right, up or down with the respective arrow buttons. Pressing the center circle resets the image back to a center position.