MPLS TE Help

hi,
can someone explain me the following statement?

Additionally, several types of traffic can be forwarded onto TE tunnel automatically, if it is known to be destined to the endpoint of tunnel and if tunnel is active:
traffic that is routed using route route learned from BGP, if BGP NextHop is tunnel endpoint (this default behaviour can be changed by setting route porperty “use-te-nexthop” to “no”), both - regular IP and VPNv4 (MP-BGP IP VPN) routes fit in this category;