The theme folder can be placed in two locations within the Chronicle hierarchy,
identified below as
CMSDIR, depending on whether the theme should be
available to all hosted sites, or to just a single particular site.
The structure of the folder that contains a theme is, by default, as follows:
module/ - contains view scripts for a specific module
controller/ - contains view scripts for a specific controller
action.phtml - a view script for a specific action icon.png - the theme's icon theme.ini - configuration file