> For the complete documentation index, see [llms.txt](https://ontime.gitbook.io/ontime-v1-old/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ontime.gitbook.io/ontime-v1-old/main-concepts/interface-1/timer-control.md).
# Timer Control
The component offers control over the playback of the currently selected event (event in green on event list). All the buttons in the interface are also available over the [OSC API](/ontime-v1-old/control-and-feedback/osc.md#osc-control-api-default-port-8888)
* **Play**
* **Pause**
* **Roll** - Roll is an advanced tool that enables ontime to run unnatended. The application will use the system clock to run the events as schedule. See [Roll](/ontime-v1-old/features/roll.md)
* **Previous**
* **Next**
* **Unload** - De-selects any running event
* **Reload** - Stops and resets running timer
* **-1 -5 +1 +5** - Increments / decrements currently running timer (time in minutes)
{% hint style="info" %}
Although the options for increment / decrement are limited to 1 and 5 minutes in the app. This limitation does not exist in the [OSC integration](/ontime-v1-old/control-and-feedback/osc.md), meaning that an OSC device can increment / decrement any amount of time:
*/ontime/delay 10*\
\&#xNAN;*/ontime/delay -20*
{% endhint %}
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