This example shows how to launch xcalc every 10 seconds. The second part of the script contains the description for every widget which will be used in the program. A descrip- tion of widget is composed of two parts. The first part describes initial properties and the second part contains instructions which will be executed when the widget receives messages. All widgets can send and receive messages.
All message are identify by a number.
The position of every widget must be specified. There is fifteen types of widgets. The Size property is ignored. This widget can be used to display disk usage. A minimum size of 30x11 is imposed.