Does anyone understand how to create deeper line breaks in lieu of paragraphs in the description text of a dynamic component dialogue?
You can use two line breaks:
<br> <br>
I checked against a <p> </p> and it is smaller.

Very clever! Huge thanks mate!!!
Here is a list of supported html tags:
https://help.sketchup.com/en/sketchup/dynamic-components-supported-html-tags
Huge thanks mate! I’d looked on that page previously, but just couldn’t find it!
