rsi | rsi[x,n] OPERATOR (INDICATOR or NUMBER) , where x is a positive integer >= 2 and n is optional and represents the number of days ago the result is computed (n=0 is the default value and represents the current end of day, n=1 is the previous end of day, etc.) | Returns the x-day relative strength index from n days ago. | (rsi[14] < 30) |