Adobe AIR 1.1(Not your version?)

Working with the file system / Reading and writing files

Working with FileStream objects

The FileStream class defines methods for opening, reading, and writing files.

FileStream open modes

Initializing a FileStream object, and opening and closing files

The position property of a FileStream object

The read buffer and the bytesAvailable property of a FileStream object

Asynchronous programming and the events generated by a FileStream object opened asynchronously

Data formats, and choosing the read and write methods to use