I stumbled upon understanding of the idea of the route propagation in AWS. It is said in the documentation:
Route propagation allows a virtual private gateway to automatically propagate routes to the route tables so that you don't need to manually enter VPN routes to your route tables. You can enable or disable route propagation.
May be it is a self-explanatory feature, but I completely don't understand what does it mean. In particular I am confused about: does it mean I don't need to explicitly add a route with some destination and a target as VPWG? Will the virtual private gateway automatically add all CIDR blocks from its VPN connections to the route table??
I am seeking for some example for dummies which can illustrate what does this feature give me.