I'm using the Memory library from Download section.

I understand the meaning of Physical and Virtual Memory. But what does Paging Memory
mean?

Is Paging Memory = Free Phys Memory + Free Virtual Memory?

output:

Total Physical Memory = 267767808bytes
Free Physical Memory = 108863488bytes

Total Virtual Memory = 2147352576bytes
Free Virtual Memory = 2119380992bytes

Total Page Memory = 333983744bytes
Free Page Memory = 159834112bytes