how can i move my robotic arm to the half of the x-axis plane??

Question

actually i want to move my robotic arm on different axis and for that i tried to build a class and write that code 

//Like for alphabet writing A

port.interop(address,1);    //to move up    

timer1.enabled=true;        // for delay

 

port.interop(address,2);  //to move horizontal

timer1.enabled=true;        // for delay

port.interop(address,5);     //to move down

timer1.enabled=true;        // for delay

now i dont know how to move my robotic arm on the half of up(vertical axis) and then draw horizontal line for A???

can anyone help me?

thanx for ur forums all replies,it really did help me aloot