KConfigCore provides access to the configuration files themselves. It features:
* Code generation: describe your configuration in an XML file, and use kconfig_compiler to generate classes that read and write configuration entries.
* Cascading configuration files (global settings overridden by local settings).
* Optional shell expansion support (see [docs/options.md](@ref options)).
* The ability to lock down configuration options (see [docs/options.md](@ref options)).
KConfigGui provides a way to hook widgets to the configuration so that they are automatically initialized from the configuration and automatically propagate their changes to their respective configuration files.