Application utilities is a collection of libraries that provides low level system and application utility APIs to the platform.
Before using the libraries of application utilities, you must be familiar with Symbian Resource File syntax, Symbian Descriptors and ECOM plug-ins.
Application utilities is a collection of libraries and has no architectural structure.
The libraries that constitute the Application utilities are:
Basic Application Framework Utilities (bafl.dll) - Provides file system utlities, clipboard, command Line Parsing, Descriptor Arrays, Environment Change Notifier, Incremental Matcher, Resource Files, Localised Names of Plug-ins, System Sounds and String Pools.
Base Services Utility
Library (bsul.dll) - Provides wrapper APIs to validate
messages and handle errors. This improves robustness of system servers
under IPC attack and ensures secure client server architecture. The
library also creates and parses .ini files and
provides information about cache drives.