I'm trying to figure out what Thinkscript is referencing when it uses these 'Lowest' and 'Highest' functions? Is this the lowest low at that close? is it the highest high since whatever that length is(so say 14, the highest high in the last 14 periods?) etc
Code:
plot LowerBand = Lowest(low, length);
plot UpperBand = Highest(high, length);
llow = Lowest(low, perioda)
hhigh = Highest(high, perioda)