Process a modification to the current layout.
The abstract Horde_Block:: class represents a single block within the Blocks framework.
The Horde_Block_Collection:: class provides an API to the blocks (applets) framework.
The Horde_Block_Layout class provides basic functionality for both managing and displaying blocks through Horde_Block_Layout_Manager and Horde_Block_Layout_View.
The Horde_Block_Layout_Manager class allows manipulation of Horde_Block layouts.
The Horde_Block_Layout_View class represents the user defined portal layout.
Class for setting up Horde Blocks using the Horde_Form:: classes.