Added comments to createx
Added comments to createx

uid/gitstream-exercises,uid/gitstream-exercises,uid/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,uid/gitstream-exercises,uid/gitstream-exercises,maxg/gitstream-exercises,uid/gitstream-exercises,uid/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,maxg/gitstream-exercises,uid/gitstream-exercises,uid/gitstream-exercises,uid/gitstream-exercises,maxg/gitstream-exercises