Hi Jon, great to find you here, looking for answers.

The most linear and only answer to your question is the Text Widget: https://documentation.aimms.com/webui/text-widget.html#text-widget

It is the only thing, apart from tooltips perhaps, that accepts html, also when specified as a String parameter. But always with the restraints/filtering that the text editor also applies: so structural elements are mostly out of the question, silently.

So I think it’s better to ask you what ‘layout’ you’re trying to achieve then. And why you maybe feel like a custom Grid Layout could not work for you. Can you describe or sketch it?