Designation tab
This tab is used for editing descriptions, either fully specified names, synonyms or text definitions. All descriptions of a given concept are shown, i.e. in the local language refset, the EN-US language refset, as well as descriptions not belonging to any of them and retired descriptions. New descriptions may be added and descriptions from user's own language refset may be changed (acceptability, case sensitivity) or retired. Also, descriptions from other language refsets may be changed to acceptable in user's language refset. (For further information see How-to articles, Editing new descriptions)
With the blue button +def it is possible to add a Text Definition to a concept; with the +fsn button a Fully Specified Name for a new concept can be added; and with the +syn button, a description may be added, which can be selected as Preferred Term (P) or and acceptable synonym (A). All changes must be saved in order to continue editing.