编写条件：
各位好，能不能把画出来的线向右侧无限延长呢？ {T1 1.00 999.00 10.00 T2 1.00 999.00 9.00} D1:T1/10,NODRAW; D2:T2/10,NODRAW; D3:=T1/10;D4:=T1/10; DRAWLINE(L=D1,D1 ,L=D2 ,D2,1 ),COLORRED; DRAWLINE(H=D1,D1 ,H=D2 ,D2,1 ),COLORBLUE; DRAWLINE(L=D1,D1 ,L=D3 ,D3,1 ),COLORRED; DRAWLINE(L=D3,D3 ,L=D4 ,D4,1 ),COLORRED;编写方法：
{T1 1.00 999.00 10.00
T2 1.00
999.00 9.00}
D1:T1/10,NODRAW;
D2:T2/10,NODRAW;
D3:=T1/10;D4:=T1/10;
DRAWLINE(L=D1,D1
,L=D2 ,L,1 ),COLORRED;
DRAWLINE(H=D1,D1 ,H=D2 ,H,1
),COLORBLUE;
DRAWLINE(L=D1,D1 ,L=D3 ,L,1 ),COLORRED;
DRAWLINE(L=D3,D3
,L=D4 ,L,1 ),COLORRED;
