# Commercial Version Activation

Color Tabs uses License Spring for application activation. User has to have valid License Spring key to activate the application. When the application is run for the first time or when any of the application buttons in Revit® environment is clicked, the LIcense Spring dialogue is opened.

To activate the application first insert your license key and click *Activate Licence*. After activation, license information is shown. To close the licensing dialogue, select *Close*.

License can be deactivated at any time by clicking *Deactivate Licence*. This allows user to active the application on different machine. License can also be deactivated by license manager remotely.

<figure><img src="/files/cHxljsPYA7MF5pwT22vT" alt="" width="366"><figcaption><p>License Spring dialog</p></figcaption></figure>


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