You can use any slide generated by AutoCAD LT as an image. For best results, follow these guidelines:
Keep it simple. When an image tile menu is displayed, the user must wait for all images to be drawn before making a selection. If you are showing the user numerous complex symbols, make the images simple versions rather than full renditions. An image should be as simple as possible yet immediately recognizable.
Fill the box. Screen space is limited, and images appear in small portions of the full screen. When making a slide for an image, be sure to fill the screen with the image before starting MSLIDE. If the image is very wide and short, or long and thin, the image tile menu will look best if you center the image on the screen with PAN before making the slide.
Images are displayed with an aspect ratio of 1.5:1 (1.5 units wide by 1 unit high). If your graphics area has a different aspect ratio, it can be difficult to produce slides that are centered in the image tile menu. If you work within a floating viewport that has an aspect ratio of 1.5:1, you can position the image and be assured that it will look the same when it is displayed in the image tile menu. The following example shows how to correctly set up a correctly proportioned viewport. A drawing with no viewports is used and TILEMODE is set to 1.
Command: tilemode
New value for TILEMODE <1>: 0
Entering Paper space. Use MVIEW to insert Model space viewports.
Command: mview
ON/OFF/Hideplot/Fit/2/3/4/Restore/<First Point>: 0,0
Other corner: 3,2
Command: zoom
All/Center/Dynamic/Extents/Left/Previous/Vmax/Window/<Scale(X/XP)>: e
Command: mspace
This viewport is now the same shape as an image tile.
Solid-filled areas such as wide polylines, traces, and filled solids are visible in image tiles only if the slide was generated after using SHADE. Otherwise, they are displayed as outlines.
Remember the main purpose of these images. Do not overuse images as you encode abstract concepts into symbols. Images are useful primarily when the user must select a graphic symbol.