This demo shows some of the capabilities of IDL using the widget set under X-windows. Each section shows ways IDL can be used to easily view data using widgets as the interface. The "Examples" pull-down menu contains an item for each demonstration. The data in this file has all been gathered from people using IDL or has been generated using IDL. For more information on the data in each example select the help option in that example to learn more. All computations are performed on your workstation as you watch. The source code for all demonstrations and computations is contained in the $IDL_DIR/lib directory tree. All user interfaces and computations are programmed using only standard IDL. No displays or visualizations are pre-stored. Only one IDL process is active. There is no help from additional processes.