Description

The NonSerialized attribute marks a variable to not be serialized.

This way you can keep a variable public and Unity will not attempt to serialize it or show it in the inspector

// p will not be shown in the inspector or serialized
@System.NonSerialized
var p = 5;

class Test {
	// p will not be shown in the inspector or serialized
	[System.NonSerialized]
	public int p = 5;
}