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  - AL language reference (background processing)
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# AL language reference (background processing)

> Learn section Development > Programming in the AL language > Running things in the background > AL language reference (background processing): 3 Microsoft Learn pages. Index of what Learn documents here, linked to Learn.

Path: [Development](../../../development.md) > [Programming in the AL language](../../programming-in-the-al-language.md) > [Running things in the background](../running-things-in-the-background.md) > AL language reference (background processing) · tier official · system development · no narrative yet

## Learn pages

- [Session.StartSession(var Integer, Integer [, Text] [, var Record]) Method](https://learn.microsoft.com/dynamics365/business-central/dev-itpro/developer/methods-auto/session/session-startsession-integer-integer-string-table-method): Starts a session without a UI and runs the specified codeunit.
- [Session.StopSession(Integer [, Text]) Method](https://learn.microsoft.com/dynamics365/business-central/dev-itpro/developer/methods-auto/session/session-stopsession-method): Stops a session.
- [TaskScheduler data type](https://learn.microsoft.com/dynamics365/business-central/dev-itpro/developer/methods-auto/taskscheduler/taskscheduler-data-type): TaskScheduler is a complex data type used for creating and managing tasks in the task scheduler, which runs codeunits at scheduled times.

Source: Microsoft Learn (CC BY 4.0). Descriptions are Learn's own.