Siebel Business Process Framework: Task UI Guide > Task UI Concepts > Language Concepts for Task UI >
Task properties are data objects used to store data that is local to a task or a subtask, which is analogous to local variables in a programming language. The task properties define the characteristics of the task. Task properties can also be used to pass data into and out of the task, analogous to input and output arguments in a programming language. For more information, see System Task Properties.