> For the complete documentation index, see [llms.txt](https://bpmflow.gitbook.io/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bpmflow.gitbook.io/project/functional-and-technical-information/timers.md).

# Timers

Timers are controled by a **OS Process** that is **always** in **loop** checking and evaluating **events** of each **BPM Process**.

The **OS process** runs uninterrupted on the background and it have access to all **BPM Process** in **BPM Flow**.

**Attached Timer Events** and **Regular Timer Events** are updated by this **OS Process**.

![](https://3974112602-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LH4gGgyMb1_fhOg782r%2F-LHEbG_tvC4E3bgzq1M8%2F-LHEbpv0auf4VMm8F2AY%2FTimer%20OS%20Process.jpg?alt=media\&token=383ed54e-e806-490b-8ca3-68968491b1c3)

 Inside **Bizagi®** the **Block** is defined as a ***extended attribute*** named \[***activationBlock***].

![](https://3974112602-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LH4gGgyMb1_fhOg782r%2F-LaqHSXJsLwhwY9VcKfE%2F-LaqHXN00qwZNbZIh4yr%2Fimage.png?alt=media\&token=56c689cd-822c-4472-9ce4-7612f57a7b7f)