CALL LEGEND(X,Y,LENGTH,DIA,ISYMB,ILINE,STRING,NCHRS) -- This subroutine generates a legend. FCTR: LE X,Y - Location of the start of the legend in scale inches relative to the relocatable origin. LENGTH - Length of the symbol/line sample in scale inches. If zero, only a symbol will be drawn; if negative, the symbol/line is drawn to the left and the label is to the left. NOTE: LENGTH IS ASSUMED TO BE REAL. DIA - Diameter of the symbol in scale inches. If zero, no symbol is drawn. ISYMB - Symbol type (See SYMBOL). If zero, no symbol is drawn. ILINE - Line type (See DSHPLT). If zero, no line is drawn. STRING - Character string containing label. NCHRS - Number of characters is above string. Note: Orientation of the legend and the size of the label is controlled through subroutine SIZEUP.