SAP HCM Standard roles

I've been trying to track down a list of SAP HCM standard Security and Authorisations roles. No luck so far.

I'm looking at test scenarios but the high level role specs I've been given so far (the roles are still being defined) just say things like "Z* version of SAP standard role for ...". Ideally I'm looking for role name, brief description and overview of what the role can do in SAP (i.e. transactions, infotypes and objects).

I've Googled but to no avail, just lots of job postings and people saying that if I go on their training course for X thousand Euro I'll know what the standard SAP HCM roles are. I did find a link that looked useful, it's to a sample chapter of "Authorizations in SAP ERP HCM", but unfortunately the sample chapter is not the chapter I need.

Gotta just keep on looking!