+ A bold arrow representation
+ The value of the attribute "End cardinality" is displayed at the end of the connector

GRAPHREP
SHADOW off
PEN style:solid w:0.1cm
EDGE

START
LINE x1:0cm y1:0cm x2:0.5cm y2:0cm

END
FONT "Arial" h:8pt
ATTR "End Cardinality" x:0cm y:-0.35cm w:c

PEN w:0.1cm
FILL color:black
POLYGON 4 x1:0.0cm y1:0cm x2:-0.15cm y2:-0.1cm x3:-0.1cm y3:0cm x4:-0.15cm y4:0.1cm