3. The non-transitory computer-readable medium of claim 1 , wherein the commonality is at least one attribute.
3. The non-transitory computer-readable medium of claim 1 , wherein the commonality is at least one attribute. 4. The non-transitory computer-readable medium of claim 3 , wherein the at least one attribute is a plurality of attributes and the attributes to be acquired by the added user-selectable element are selected on a basis of a user input.