The Information tab of the SubModel dialog displays some summary information regarding the SubModel:
The top part of the dialog provides two fields (Author and Analysis description) which allow you to identify the author and provide a brief description for your SubModel.
The bottom part of the dialog provides some useful summary statistics for the SubModel, including the number of model elements and graphical components, and the degree of subcontainment. The number of levels of subcontainment does not refer to the number of Containers; it refers to the number of hierarchical levels of Containers. For example, if the SubModel A contained Containers B and C, A would have 1 level of subcontainment; if the SubModel contained B, and B contained C, it would have 2 levels of subcontainment.
The dialog also indicates the total size of the results being saved for all elements within the SubModel. This information can be very useful in helping you to manage the size of the model file.