Although the element zero is not shown when an array supports a form object, there is no restriction in using it with the language. For more information about the element zero, see the section Using the element zero of an array . Arrays are 4D variables. Like any variable, an array has a scope and follows the rules of the 4D language, though with some unique differences. For more information, see the sections Arrays and the 4D Language and Arrays and Pointers .
Arrays are also user interface objects.
For more information about the interaction between arrays and form objects, see the sections Arrays and Form Objects and Grouped Scrollable Areas . Arrays are designed to hold reasonable amounts of data for a short period of time. However, because arrays are held in memory, they are easy to handle and quick to manipulate. For details, see the section Arrays and Memory .