Every time you publish in BlockLab, the system creates a stored version of your design that you can revert back to if you so wish. If you have made a mistake on your website design in BlockLab, or would just like to restore a previous version, take the following steps: 

Open the page you would like to edit by going to Content > Pages > and clicking on the page you would like to edit. You can also navigate to BlockLab on the main menu and select the page or area you wish to edit there.

Click Open this page in Blocklab:

 Now you are in BlockLab, click the left arrow in the Versions tool in the top right. This will cycle you back to a previously published version of the page's design. You can continue to use the left and right controls on Versions until you are back at a point you are happy with.

Now click Publish and this edit will now be live and visible on your live website.