:arf
---

face ro aReadWriter:Face
	write
		> data:{Byte ..}
		< wrote:Int
		< err:Error
	read
		> into:{Byte ..}
		< read:Int
		< err:Error

face ro bDestroyer:Face
	destroy

face ro cFuncInterface:Func
	> something:Int
	< someOutput:Int
	< otherOutput:String