What's the order criterion without the optimization of the s

There's a question I haven't undrestood.

Premise:
•I join the MapPoint file with an Access table with the addresses of 700
customers near Rimini (an italian city).
•I draw a shape that cover the customers I want.
•'Planning Route' - 'Symbol in the select area' - 'Add to Route' (I have
translated from italian: maybe the menu voices are different in english)
MapPoint shows me a list of addresses ordered.

If I don't click on 'optimize stops' what is the criterion that MapPoint uses to create this route? Maybe starting from an accidental point MapPoint proceeds step py step finding the most near in the other points and the shortest way to arrive to this point?

Thanks in advance,
Pileggi