1The directory contains the resources for StatusBar and Navigation Bar. 2 3The resources are not arranged as per the standard resources configuration. 4They are stored per API. However, to prevent duplication of resources, each API 5resource directory is used as a backup for all earlier API levels. 6 7For example, for the back icon for ICS, we search first in v18, where we don't 8find it, and then in v19. 9