RIP Reliable Default Route with IP SLA

Hi Lazaros,
Would you please explain the following:

  1. we can’t connect IP SLA directly with static route, we have to do it with object tracking:
    R1(config)# track 1 rtr 1.

  2. This will link object 1 with IP SLA 1
    R2(config)# track 1 ip sla 1
    My confusion is, in the above commands in R1 track 1 represents IP SLA and rtr represents object tracking if I am right.
    But in R2 track 1 represents object tracking and ip sla as its name implies represents ip sla1.

  3. R1(config)# ip sla schedule 1 start-time now life forever
    In the command above the ip sla operation number 1 and ip sla schedule 1 should be the same or not?

  4. R2(config-router)# default-information originate route-map TRACK_LINK
    in the RIP default route configuration we just require the default-information originate command to advertise default route in RIP why do we need route-map?
    And the last thing i should write is that RIP Reliable Default Route with IP SLA totally confused me if possible simlify it to me.
    thanks in advance.