Control operations (continued): D = Screen colors (COLOR) L = Listing directory entries (DIR) H = Checking existence of a file (CHECK) I = Modifications of edit columns and lines (COLX) S = Levenshtein distance between two strings (STRDIST) C = Displaying an edit line below the Survo window (LOWLINE) P = Survopoint display mode E = more information on the Survo Editor