> For the complete documentation index, see [llms.txt](https://help.arkance-systems.com/color-tabs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.arkance-systems.com/color-tabs/en-13/general/installation-and-activation/trial-activation.md).

# Trial Version Activation

Coor Tabs uses License Spring for application activation.

### Get trial key

Upon the first launch of the application, or when clicking any button in the Color Tabs app within the Revit® environment, a dialog box will appear for entering the license key. To obtain a trial key, choose *Get Trial Key.* In the subsequent dialog, you can enter your contact details and email address, then confirm by clicking *Get Trial*.

<figure><img src="/files/5Tr66zeUGuXisspb1kAu" alt="" width="365"><figcaption></figcaption></figure>

<figure><img src="/files/auDUuE2TK4EI0ebV8fVn" alt="" width="344"><figcaption></figcaption></figure>

A license key for the application is sent to the specified email within a few minutes. Enter this key into the License Spring dialog box and confirm by clicking the *Activate License* button.

<figure><img src="/files/6LF4oTFZybc6vokYvcwU" alt="" width="365"><figcaption></figcaption></figure>