I'll try. AFAIU it aims to provide readable list of exports from those libraries residing in a flash. The libraries are not monolithic - instead they provide set of various functions that other programs (i.e. XMB, games, PlayTV, etc.) may use. So for example there are functions for working with memory (allocation, deallocation), C library (standard functions widely used), various audio formats decoders (I see AC3 and ATRAC there), video codecs support (AVC), etc. This information can be extremely useful once the clever people find a way to run their (unsigned) code - that code will need those functions to do some useful stuff... Is it clear?