통신 서신의 주요 색인을 구하는 방법.

X0:=BACKSET(REF(C, 3) < MA(C, 3) 및 REF(V, 3)>MA(V, 3) 및 REF(C/REF(C,1) >/kloc-

X 1:=X0 및 REF(X0,1) = 0;

STICKLINE(X 1, h, c, 0, 0), COLORFF0080

STICKLINE(X 1, o, c, 3, 0), COLORFF0080

STICKLINE(X 1, l, o, 0, 0), COLORFF0080

X3:= BACKSET(LLV( 1, 3)>REF(C, 3) 및 REF(X 1, 3), 4)

STICKLINE(X3, REF(C, BARSLAST(X 1)), REF(C, BARSLAST(X 1)

X5:=BACKSET(LLV(L, 3) < REF(O, 3) 및 REF(X 1, 3), 4);

STICKLINE(X5, REF(L, BARSLAST(X 1)), REF(L, BARSLAST(X 1)