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+//Example 2.1
+//(b) step response of Cruise control system
+
+xdel(winsid())//close all graphics Windows
+clear;
+clc;
+
+//------------------------------------------------------------------
+//Cruise control parameters
+m=1000;
+b=50;
+u=500;
+
+// Transfer function
+s=%s; // or 
+s=poly(0,'s');
+sys=syslin('c',(1/m)/(s+b/m))
+
+//step response to u=500;
+t=0:0.5:100;
+v=csim('step',t,u*sys);
+plot2d(t,v,2)
+
+//Title, labels and grid to the figure
+exec .\fig_settings.sci; //custom script for setting figure properties
+title('Responses of car velocity to a step in u','fontsize',3)
+xlabel('Time t (sec.)','fontsize',2)
+ylabel('Amplitude','fontsize',2)
+
+//------------------------------------------------------------------