Excel, Outlook, PowerPoint, and Word include a variety of artistic effects such as glass, paint stroke, pastel, and pencil sketch effects that users can apply to inserted images. A new background removal feature based on Microsoft Research technology is included in Excel, Outlook, PowerPoint, and Word to remove the backgrounds of images inserted into documents. It is exposed as a Remove Background command that appears on the Picture Tools contextual tab on the ribbon when an image is selected. When activated this command displays a separate Background Removal contextual tab and places a selection rectangle and magenta color over portions of the selected image. The selection rectangle determines, based on an algorithm, which area of the selected image will be retained once the background removal process is complete, whereas the magenta color indicates the areas that will be removed. Users can manually adjust the position and size of the selection rectangle and also mark individual areas of an image to keep or remove; it is also possible to delete a mark after an inadvertent selection or if it produces an undesired result. After the background has been removed, users can apply various visual effects to the result image or wrap text in a document around it; users can also crop the image since removing the background does not reduce its original size. Office 2010 introduces improvements to the image crop process in Excel, Outlook, PowerPoint, Word. The crop selection rectangle now grays out the portions of an image to be removed during a crop process and displays the result area in color, instead of completely removing all portions of an image outside of the selection rectangle from view as in previous versions of Office; images can now be repositioned underneath the selection rectangle while it is active. A new Aspect Ratio option under the Crop command on the ribbon presents a drop-drop down menu with options for both landscape and portrait page orientations to customize the aspect ratio of the selection rectangle before users crop an image, which automatically resizes the selection rectangle when users start the crop process; users can manually resize the selection rectangle and simultaneously preserve its aspect ratio by resizing it from its corners while pressing the key. The aforementioned cropping improvements are also available in Publisher. The Picture Shape command in previous versions of Office has been replaced with a new Crop to Shape command that allows users to resize and move the selected shape during the crop process. By default, Office 2010, like previous versions, automatically resizes images that are inserted into shapes, which can negatively affect their aspect ratio. To address this, images in shapes can now be cropped or resized after being inserted, and individual Fit and Fill options have been incorporated.