# LID Surface Operations

To create a LID, click once on the LID icon on the Tool Bar; then click once to deposit it on the screen on the Interface level. An unassigned LID looks like the one shown in Figure 6-29.

Figure 6-29 Unassigned List Input Device (LID)

You can resize the LID by selecting it and then dragging one of the Resizing Handles. Note, however, that the scrolling capabilities of the LID mean that you can load multiple variables to a small LID. Users of your model can scroll through the device to view and modify any variable that has been loaded to the LID.