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

# Entity constants

> linestyle.*, shape.*, size.*, extend.*, text.align.*, and text.wrap.* enum values for drawing entities.

## Overview

The Darvas indicator runtime exposes several enum namespaces for entity options. You can use the string literals directly (e.g. `"solid"`) or the named constants (e.g. `linestyle.solid`) - they are equivalent.

## `linestyle.*` - Line and border styles

| Constant                | String value    | Used by          |
| ----------------------- | --------------- | ---------------- |
| `linestyle.solid`       | `"solid"`       | Line, Box border |
| `linestyle.dotted`      | `"dotted"`      | Line, Box border |
| `linestyle.dashed`      | `"dashed"`      | Line, Box border |
| `linestyle.arrow_right` | `"arrow.right"` | Line only        |
| `linestyle.arrow_left`  | `"arrow.left"`  | Line only        |
| `linestyle.arrow_both`  | `"arrow.both"`  | Line only        |

```js theme={null}
Line("trend", {
  x1: 0, y1: 100, x2: 20, y2: 110,
  style: linestyle.dashed,
  color: "#22c55eFF",
});
```

## `shape.*` - Marker shapes

| Constant              | String value      |
| --------------------- | ----------------- |
| `shape.circle`        | `"circle"`        |
| `shape.square`        | `"square"`        |
| `shape.triangle_up`   | `"triangle_up"`   |
| `shape.triangle_down` | `"triangle_down"` |
| `shape.diamond`       | `"diamond"`       |
| `shape.cross`         | `"cross"`         |
| `shape.x`             | `"x"`             |
| `shape.arrow_up`      | `"arrow_up"`      |
| `shape.arrow_down`    | `"arrow_down"`    |

```js theme={null}
Marker("signal", {
  x: ctx.i(), y: ctx.low(),
  shape: shape.triangle_up,
  size: 10,
  color: "#22c55eFF",
});
```

## `size.*` - Text size presets

Used for `textSize` in Box and for Label `size` (as a numeric value - size.\* is string-only for Box).

| Constant    | String value              |
| ----------- | ------------------------- |
| `size.xs`   | `"xs"` - extra small      |
| `size.sm`   | `"sm"` - small            |
| `size.md`   | `"md"` - medium (default) |
| `size.lg`   | `"lg"` - large            |
| `size.xl`   | `"xl"` - extra large      |
| `size.auto` | `"auto"` - auto-fit       |

```js theme={null}
Box("zone", {
  x1: 0, y1: 100, x2: 10, y2: 110,
  text: "Demand",
  textSize: size.sm,
});
```

## `extend.*` - Box extension directions

| Constant        | String value | Effect                      |
| --------------- | ------------ | --------------------------- |
| `extend.none`   | `"none"`     | No extension (default)      |
| `extend.left`   | `"left"`     | Extend left to chart edge   |
| `extend.right`  | `"right"`    | Extend right to current bar |
| `extend.up`     | `"up"`       | Extend upward               |
| `extend.down`   | `"down"`     | Extend downward             |
| `extend.both_x` | `"both_x"`   | Extend left and right       |
| `extend.both_y` | `"both_y"`   | Extend up and down          |

```js theme={null}
Box("supply", {
  x1: 5, y1: 105, x2: 10, y2: 110,
  extend: extend.right, // box grows forward in time
  color: "#ef444420",
});
```

## `text.align.*` - Text alignment

### Horizontal alignment

| Constant            | String value |
| ------------------- | ------------ |
| `text.align.left`   | `"left"`     |
| `text.align.center` | `"center"`   |
| `text.align.right`  | `"right"`    |

### Vertical alignment

| Constant            | String value |
| ------------------- | ------------ |
| `text.align.top`    | `"top"`      |
| `text.align.center` | `"center"`   |
| `text.align.bottom` | `"bottom"`   |

```js theme={null}
Box("zone", {
  x1: 0, y1: 100, x2: 10, y2: 110,
  text: "FVG",
  textHAlign: text.align.right,
  textVAlign: text.align.top,
});
```

## `text.wrap.*` - Text wrapping

| Constant         | String value |
| ---------------- | ------------ |
| `text.wrap.none` | `"none"`     |
| `text.wrap.auto` | `"auto"`     |

## Related pages

<CardGroup cols={2}>
  <Card title="Line" href="/entities/line">
    Uses linestyle.\* for the style option.
  </Card>

  <Card title="Box" href="/entities/box">
    Uses extend.*, size.*, and text.align.\*.
  </Card>

  <Card title="Marker" href="/entities/marker">
    Uses shape.\* for the shape option.
  </Card>
</CardGroup>