Which lines of Figure 7-85 ensure that the ring counter self-starts?

Figure 7-85SUBDESIGN fig7_85(clk:INPUT;q[3..0]:OUTPUT;) VARIABLE ff[3..0]:DFF;ser_in:NODE;BEGIN ff[].clk = clk;IF ff[3..1].q == B”000″ THEN ser_in = VCC;– self startELSE ser_in = GND;END IF;ff[3..0].d = (ser_in, ff[3..1].q);– shift rightq[] = ff[];END;    

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