doc headers

lib/volume/tvi/Tvi.md

@@ -1,5 +1,22 @@
 # TVI: Trade Volume Index
 
+| Property         | Value                            |
+| ---------------- | -------------------------------- |
+| **Category**     | Volume                        |
+| **Inputs**       | OHLCV bar (TBar)                          |
+| **Parameters**   | `minTick` (default 0.125)                      |
+| **Outputs**      | Single series (Tvi)                       |
+| **Output range** | Unbounded                     |
+| **Warmup**       | `> 2` bars                          |
+
+### TL;DR
+
+- Trade Volume Index refines the relationship between price and volume by introducing a threshold filter.
+- Parameterized by `mintick` (default 0.125).
+- Output range: Unbounded.
+- Requires `> 2` bars of warmup before first valid output (IsHot = true).
+- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
+
 > "The direction of money flow matters more than the magnitude of price change." — William Blau
 
 Trade Volume Index refines the relationship between price and volume by introducing a threshold filter. Unlike OBV which responds to any price change, TVI only changes direction when price movement exceeds a minimum tick threshold. This "sticky direction" behavior filters out noise from insignificant price fluctuations, allowing the indicator to better capture genuine accumulation and distribution.
@@ -215,4 +232,4 @@ The minTick should generally match or exceed the instrument's minimum price incr
 - Blau, W. (1995). *Momentum, Direction, and Divergence*. Wiley.
 - Blau, W. (1993). "The Trade Volume Index." *Technical Analysis of Stocks & Commodities*.
 - Achelis, S. (2001). *Technical Analysis from A to Z*. McGraw-Hill.
-- TradingView. "PineScript TVI Implementation." Community Scripts.
+- TradingView. "PineScript TVI Implementation." Community Scripts.