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

# PlaceholderStruct

> v0.20.5

> **PlaceholderStruct** = `object`

Defined in: [src/modules/types.ts:465](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L465)

Structure for placeholders in rules

## Properties

### flags

> **flags**: `number`

Defined in: [src/modules/types.ts:473](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L473)

Flags for the placeholder

***

### mappedTrackerKey

> **mappedTrackerKey**: `any`

Defined in: [src/modules/types.ts:471](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L471)

Key for mapped tracker

***

### pType

> **pType**: `number`

Defined in: [src/modules/types.ts:467](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L467)

Parameter type

***

### typeSpecificIndex

> **typeSpecificIndex**: `number`

Defined in: [src/modules/types.ts:469](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L469)

Type-specific index