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HELP!

Dose anybody know the purpose of doing this

void Send_CmdNo(unsigned char command){

  CSX=0;
  RDX=1;
    D_CX=0;
        DBUS=command;
        WRX=0;
        WRX=0;
        WRX=0;
        WRX=1;
  CSX=1;
}

why use WRX=0 3 times b4 WRX=1?
wouldn't that just give you WRX=1?

by the way WRX is just

sbit WRX        = P7^2;

does it mean on the I/O pin the output will send out
0 three times and 1 one time? It performs that fast?

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