tag

The tag config is used to specify what HTML tag the component renders as. For example, you can take a Table and give it tag='div' to make it render not as <table> but as <div>. Of course, in that case you need to do the same for the row rendering.

This feature can be used to change the tag used for the title/h_tag of a component. By default iommi uses Header, which is a special class that automatically infers if it should be <h1>, <h2>, <h3>, etc based on the nesting level. You can then override the tag to specify the exact HTML tag you want.