Williams Sentiment Index
Plot this in it's own window 

TrueRangeHigh:=Max(Ref(CLOSE,-1),HIGH); 
TrueRangeLow:=Min(Ref(CLOSE,-1),LOW); 
(Mov(CLOSE,9,S)-Mov(TrueRangeLow,9,S))/ 
(Mov(TrueRangeHigh,9,S)-Mov(TrueRangeLow,9,S))*100