wtf is the sort index??

[PilotTroll]

im trying to create a new civ with the mod buddy and for the <playeritems> there is a sortidex, can someone please explain its purpose?

 

[CivilizationAce]

The lower numbered items appear first. People generally use 10, 20, 30… Avoid duplicate numbers.

 

[FurionHuang]

Just the order of items you see in game set-up window.