Does population play any importance role in SE4?

[Kadste]

Have not played around with the settings.txt file much, but what effect do the "Population Required to Operate One Facility" and "Population Modifiers" settings have? Are they straight forward in what thay are saying?

"Population Required to Operate One Facility := 50"
(from settings.txt)

If I have a pop of 65 on a planet. Will only one facility produce? If only one, which one? Will two facilities produce? Will all facilities produce? Does it round the 65 down so one produces, round up or round off?

Pop Modifier 1 Population Amount := 99
Pop Modifier 1 Production Modifier Percent := 100
Pop Modifier 1 SY Rate Modifier Percent := 100
Pop Modifier 2 Population Amount := 499
Pop Modifier 2 Production Modifier Percent := 105
Pop Modifier 2 SY Rate Modifier Percent := 105
(again, from settings.txt)

Does the planet with a pop of 100 to 499 produce and build (SY rate) 5% more per turn than a planet with 1 to 99 pop?

My understanding is there is a correlation between these setings and the amount of production per planet