Analytics Software

I can see a number of HSP functions are registered in Essbase but cannot find any documentation for them. I am reluctant to use them for client development without some proper documentation. Does anyone know where it can be found?

The functions are :
@HspNthMbr
@HspNumToString
@HspDateToString
@HspConcat
@HspMbrIndex
@HspMessage
@HspGetMbrCount
@HspCreateCDFSession
@HspRemoveCDFSession
@HspAddPageCombination
@HspCreateEssbaseServerFile
@HspWritePageCombinations
@HspGetFileName

Many of these look interesting. Some of them seem obvious, others might have a number of paramenters and options.

Any help appreciated.

Richard