> For the complete documentation index, see [llms.txt](https://docs.helmut.de/helmut4-releases/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.helmut.de/helmut4-releases/v4.7.0/helmut4-components/streamdesigner/wildcards/functional-wildcards/local-environment-related-wildcards/user-os.md).

# User OS

This wildcard will be replaced with the clients operating system (the client which is connected to the browser).

\
The available values for this wildcard are:

* Linux
* Mac OS X
* Windows 10
  * *This value will be shown as well on Win 11 hosts*
* Windows NT
  * *This value is dedicated to Windows Server OS hosts*
* Unix

{% hint style="info" %}
This wildcard tells you the operating system of your client, accessing the Helmut4 website, the operating system of your job/stream might be another - consider to have a look into this wildcard [local OS](/helmut4-releases/v4.7.0/helmut4-components/streamdesigner/wildcards/functional-wildcards/local-environment-related-wildcards/local-os.md)
{% endhint %}