About vrf in the changelog

RouterOS RouterOS beta
1

I noticed “ tunnels - added VRF support for EoIP, IPIP and GRE tunnels;” in the changelog of version 7.7. What is this change exactly doing, is there detailed description?

2

https://help.mikrotik.com/docs/pages/viewpage.action?pageId=328206#VirtualRoutingandForwarding(VRF)-Supportedfeatures

3

http://forum.mikrotik.com/t/vrf-v7/161588/1