John, thank you. But you said, I have not yet fully understood. Because, I am new to nlite, so there are many places can not quite understand. Want to get more help. As shown, the picture is reserved for a selected component. Photo 2 is to remove the selected components. In this way, I can understand a picture one and picture two is a common, mutually connected, right? So, picture two options in the function of one's ability to include pictures of the options in the function? If this is so. Photo One of the components of the system is divided into several parts as a custom. Photo 2 is to the various components of the system breakdown as a custom. I can understand? Well, picture one of the options can not choose. Just select the pictures need to modify the two can be had, right? Picture 3, I mean the red box within the language groups. But the language groups in the end I did not thoroughly understand what is used to do? Someone to be my answer? The language groups are used to multi-select input method, or work area? What is here to play the role of language groups? May be multiple-choice mean? Hope someone can answer about. Once again, thank you.