To indicate the location and orientation of the UCS, AutoCAD LT displays the UCS icon either at the UCS origin point or in the lower-left corner of the current viewport. If the icon is displayed at the origin of the current UCS, a cross (+) appears in the icon. If the icon is displayed in the lower-left corner of the viewport, no cross appears in the icon.
AutoCAD LT displays the UCS icon in various ways to help you visualize the orientation of the drawing plane. The following figure shows some of the possible icon displays.
The broken pencil icon indicates that the edge of the XY plane is almost perpendicular to your viewing direction. This icon warns you not to use your pointing device to specify coordinates.
