Whats makes workers tradable?

[ArmPilot]

I was wondering this becuase if this can be found out then you can make all the other units tradable as well. Many people have wanted tradable military units and such.

 

[POLM]

think it's might be hardcoded...

 

[Wyrmshadow]

I think it's if they are just sitting in your capital.

 

[ArmPilot]

I was afriad it was hardcoded =/

 

[embryodead]

It's not hardcoded... what makes workers tradable is "captured unit" setting in General Settings tab, but only 1 unit can be a default captured unit, so you cant do much with it anyway