--- /dev/null
+sample-node0_hostname
+{{ node1_hostname }}
+This will be kept as-is {{ node0_backup_router_address }}
+sample-node0_hostname
+Even this one {{ node1_backup_router_address }} as it doesn't matter if variable is surrounded by text
+sample-node2_backup_router_address {{ node1_backup_router_address }} Even this One if multiple variable in same line