This transaction will calculate the distance between two created points and print it to the console.

transaction 1 script 'New script transaction'
{
    	DPoint3d ptD3d = new DPoint3d(2.0, 1.0, 0.0); 
    	DPoint3d farPtD3d = new DPoint3d(4.0, 3.0, 0.0); 
    	double distance = farPtD3d.Distance(ptD3d); 
    	Print(''+distance);
}

To display the console window you must select (Script Console ).