Difference between central "config.ini" and "settings.ini" ?

When I go (under Win 7) to directory:

C:\ProgramData\VMware\

then there are a couple of sub-directories. Two of them or of particular interest:

VMware Player
and
VMware Workstation

Since Vmware renamed a couple of month ago VMware Player into VMware Workstation player the first subdirectory is deprecated.
So only VMWare Workstation is active.

Correct?

In both of the subdirectories mentioned above two files are stored:
config.ini

and

settings.ini

Whats the difference?

Third question:
Are all parameters for *.vmx files valid for these two files as well?

Matt