> ## Documentation Index
> Fetch the complete documentation index at: https://terminal.incrypto.ru/llms.txt
> Use this file to discover all available pages before exploring further.

# Depth of Market (DOM)

> Real-time order book with iceberg detection and gradient mode.

# Depth of Market (DOM)

The DOM widget displays the real-time order book as a price ladder with bid and ask volumes at each price level. It provides direct visibility into market liquidity, large resting orders, and potential iceberg activity.

## Overview

The DOM shows:

* **Price column** -- center column with price levels
* **Bid volume** -- left side, showing buy orders at each price
* **Ask volume** -- right side, showing sell orders at each price
* **Spread** -- highlighted gap between best bid and best ask
* **Last trade** -- indicated on the price ladder with a marker

All data streams in real-time via WebSocket, updating multiple times per second.

## Opening the DOM

<Steps>
  <Step title="Add a DOM pane">
    Right-click on a tab header and select **Add DOM** from the context menu, or use the chart type selector to switch a pane to DOM view.
  </Step>

  <Step title="Select symbol">
    The DOM uses the same symbol as the active chart tab. Change the symbol in the toolbar to update the DOM.
  </Step>
</Steps>

## Display Modes

### Standard Mode

The default view shows raw order book depth with volume numbers at each price level. Bars extend horizontally proportional to the volume size relative to the visible range.

### Gradient Mode

Gradient mode replaces numeric volume bars with a smooth color gradient, making it easier to spot large concentrations of liquidity at a glance.

| Visual             | Meaning                         |
| ------------------ | ------------------------------- |
| **Intense color**  | High volume at that price level |
| **Faint color**    | Low volume                      |
| **Green gradient** | Bid side                        |
| **Red gradient**   | Ask side                        |

<Tip>
  Gradient mode is especially useful on high-resolution displays where it turns the entire DOM into a heatmap-like visualization of liquidity structure.
</Tip>

## Iceberg Detection

The DOM includes an iceberg order detection algorithm. Iceberg orders are large orders split into smaller visible portions -- when one portion fills, another appears at the same price.

### How Icebergs Are Detected

The system monitors for repeated refills at the same price level:

1. A visible order at a price level gets filled (partially or fully).
2. Within a short time window, a new order appears at the same price.
3. If this pattern repeats beyond a configurable threshold, the level is flagged as an iceberg.

Detected icebergs are marked with a distinct visual indicator on the price ladder.

<Note>
  Iceberg detection works on live data only. It does not reconstruct historical icebergs from past order book snapshots.
</Note>

## Volume Filters

Volume filters let you highlight or hide price levels based on their order size. This helps you focus on significant liquidity levels while ignoring noise.

### Size Tiers

Configure size thresholds to categorize orders:

| Tier       | Description                        | Visual                             |
| ---------- | ---------------------------------- | ---------------------------------- |
| **Small**  | Below the first threshold          | Normal display                     |
| **Medium** | Between first and second threshold | Slightly highlighted               |
| **Large**  | Between second and third threshold | Prominently highlighted            |
| **Whale**  | Above the third threshold          | Bold highlight with distinct color |

### Filter Configuration

<Steps>
  <Step title="Open filter settings">
    Click the filter icon in the DOM toolbar to open the volume filter panel.
  </Step>

  <Step title="Set thresholds">
    Enter volume thresholds for each size tier. Values are in the quote currency (USDT for USDT-M futures).
  </Step>

  <Step title="Choose display mode">
    Select whether to **highlight** large orders (default) or **hide** small orders below a minimum threshold.
  </Step>
</Steps>

### Named Presets

Save your filter configurations as named presets for quick switching between different market conditions.

* **Scalping** -- lower thresholds to see smaller significant orders on 1m charts
* **Swing** -- higher thresholds to focus only on major liquidity levels
* **Whale Watch** -- very high thresholds to show only the largest resting orders

<Tip>
  Create different filter presets for different symbols. A "large" order on BTCUSDT is very different from a "large" order on a low-cap altcoin.
</Tip>

## DOM on Chart Overlay

In addition to the standalone DOM widget, you can overlay order book levels directly on the main chart using the **DOM on Chart** indicator. This displays real-time bid/ask depth as horizontal bands on the candlestick or cluster chart.

Enable it from the indicator panel under the **Order Flow** category.

## Performance Notes

The DOM processes a high volume of WebSocket messages. On slower connections or hardware:

* Reduce the number of visible price levels (zoom into a tighter range)
* Disable gradient mode if rendering is slow
* Close unused DOM panes -- each one maintains its own WebSocket subscription

<Warning>
  Running multiple DOM panes for different symbols simultaneously increases network traffic and CPU usage significantly. Use one DOM pane at a time for best performance.
</Warning>

## Keyboard Shortcuts

| Shortcut         | Action                          |
| ---------------- | ------------------------------- |
| `Scroll wheel`   | Move price ladder up/down       |
| `Ctrl + Scroll`  | Zoom price levels in/out        |
| `Click on price` | Center the ladder on that price |

See [Keyboard Shortcuts](/en/advanced/hotkeys) for more.