This field is used to define a short title that will be subsitute, if it is entered, to the title for the object in the link description present in the link explorer. Thus, if there are links to an object whose title is long (Currency exchange rate for example), it is useful to give a short name (rate for example), in order to view in the link explorer a title such as Use rate XXX rather than Use exchange rate XXX that risks being too long to be displayed completely in the left list.