Low
用当前K线的最低价画线：
Plot1(Low,"Low"); 用前一根K线的最低价画线：
Plot1(Low,"Low");
Plot1
"Low"
Plot1(Low Of 1 Bar Ago,"Previous bar's low"); 用前第二根K线的最低价画线：
Plot1(Low Of 1 Bar Ago,"Previous bar's low");
Of
1
Bar Ago
"Previous bar's low"
Plot1(Low[2],"Low 2 bars ago");
2
"Low 2 bars ago"