TMF is a CMF (Chaikin Money Flow) variation that addresses some of the gaps in the original indicator. More info: www.incrediblecharts.com
TMF uses true range, rather than daily Highs minus Lows. Also, uses Wilder's MA rather than SMA/EMA.
Since I had to write Wilder's MA (WiMA) for TMF, I have published that also as a separate indicator. WiMA is like EMA, but...