InnerBlocks is quite a nifty feature in WordPress. It allows you to set up a new block comprised of existing blocks in a pre-defined layout in the content of a post. They prove to be very useful when dealing with sites having monotonous content on a number of posts. It can be a real time saver. In order to set up a block containing InnerBlocks, refer to the official documentation. It will clear a lot of things for you. However, in this article, we will not be talking about setting up InnerBlocks. In this post, we'll focus on one particular attribute template. The layout of a block is set up with the help of this attribute and frankly, it's not very well explained in the official docs. So, I thought of shedding some light on it.