Looker Labs features are new, in process features, whose details may change over time. They are beta features that you can choose to use or leave disabled. You can see a list of these features in the Admin section’s Labs panel. The list of features varies by release but looks like this:
Each feature has a short description underneath it explaining the functionality that it adds or changes in Looker. If you would like more detail check out Discourse, which sometimes has more detailed descriptions, or reach out to Looker support.
Enabling and Disabling Labs Features
To enable or disable a feature, simply choose the desired option from the drop down menu and click the appropriate Update button.
Use caution when disabling a Labs feature. If users or developers have relied on the feature to create a certain behavior, disabling the feature will break that functionality.