model Echo Modelica.Blocks.Interfaces.RealInput u annotation( Placement(visible = true, transformation(origin = {-100, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-80, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0))); Modelica.Blocks.Interfaces.RealOutput y annotation( Placement(visible = true, transformation(origin = {110, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {110, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0))); equation connect(u, y) annotation( Line(points = {{-100, 0}, {104, 0}, {104, 0}, {110, 0}}, color = {0, 0, 127})); annotation( uses(Modelica(version = "3.2.2"))); end Echo;