The Heidelberg Catechism is now available as a notebook.
Each question and answer, along with its scriptural references has its own note and is anchored accordingly so that it can appear in your bible. This means that if enabled via the visual filter, you can see anytime a bible verse is referenced by the Heidelberg Catechism.
You can add this notebook by searching the public documents within logos, or following this link: https://flshare.net/g95da3

Inspiration for this comes from Wesley W. Weber Jr. who has done the same with the Westminster Confession of Faith - which can be found here: https://flshare.net/k45tf8 I highly recommended it! Wesley's forum post, which includes a PDF explaining how to use his notebook, is available here: https://community.logos.com/forums/t/217732.aspx?PageIndex=1
I have followed closely the style and formatting of Wesley's Westminster Confession notes and they function the same way. Once added:
1) In your Bible, purple star icons will appear before a biblical verse or passage that is referenced in the catechism (these can be turned on or off in the visual filters).
2) Hovering over a purple star icon will show you the exact question and answer where the catechism references the verse.
3) Clicking a purple star icon will open up the note for that question and answer, showing you both the exact part of the catechism where the verse is referenced, and the entire HC question and answer so you can read it in context.
Please use and share with others. Any errors or issues that need fixing let me know. And my thanks again to Wesley, who I believe is also working on the Westminster Shorter and Longer Catechisms.