by [name=Saulo Vallory] I took some time to think about the proposed syntax because something looked odd to me but I couldn’t put my finger on it. After reading what @angusmorton said on the discord thread, I got it. The name “attribute tag” suggests it's defining an attribute, which demands something that has that attribute. That something in this case would be the exports object, but that isn’t made clear by the syntax. How about we do… https://markojs.com/docs/custom-tags/#from-variables