RAK12033 Interrupt Threshold

I’m trying to understand the threshold values used for the RAK12033 with interrupts. In the example code:

 * Range [0g : 1g]; Resolution 1g/256=~3.9mg.
#define ACCEL_X_THR 200
#define ACCEL_Y_THR 200
#define ACCEL_Z_THR 200

What do these threshold values represent? 200mg?

Also, does this mean that the interrupt threshold resolution is only 8bit?

Looking into the library code says it is in mg

Same from the datasheet