# StudyTextInputInfo [Integration guide](https://docs.lumencharts.com/charting-library/reference/compatibility) · [Reference index](https://docs.lumencharts.com/charting-library/api/) Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation. ## Extends [StudyInputBaseInfo](https://docs.lumencharts.com/charting-library/api/StudyInputBaseInfo) ## type {#type} ```ts readonly type: StudyInputType.Text; ``` Use the type signature above and the integration guide for the owning capability. ## defval {#defval} ```ts readonly defval: string; ``` Use the type signature above and the integration guide for the owning capability. ## options {#options} ```ts readonly options?: string[]; ``` Use the type signature above and the integration guide for the owning capability. ## optionsTitles {#optionstitles} ```ts readonly optionsTitles?: StudyInputOptionsTitles; ``` Use the type signature above and the integration guide for the owning capability. ## Related types - [StudyInputBaseInfo](https://docs.lumencharts.com/charting-library/api/StudyInputBaseInfo) - [StudyInputOptionsTitles](https://docs.lumencharts.com/charting-library/api/StudyInputOptionsTitles) --- Documentation page: https://docs.lumencharts.com/charting-library/api/StudyTextInputInfo