A computer-implemented method is disclosed. In the method, a start position of an item list comprising a plurality of items is determined in response to a session-in event. An end position of the item list is determined in response to a session-out event. The reviewed sub-list and unreviewed sub-list are differently displayed. The reviewed sub-list is at least a part of the item list and comprises items from the start position to the end position in the item list. The unreviewed sub-list comprises items outside the reviewed sub-list.