Hello all,

I need some help with a small HTML customization. 

On our website we have many product variants, and each variant has a SKU or "Internal Reference" number. I would like to display this number on the main product page, so every time someone chooses a different variant, it updates the Internal Reference number so they can specify it in an email.

I have attached a screenshot of what it looks like when you click the "add to cart" popup button on the main shop page, and I want to add/replicate the text circled in red, however I do not know what piece of the HTML creates this. 

Please let me know what the code is and where I can put it on the main product page for it to show up as seen in the second screenshot with the arrow. 

Screenshot 1: see the internal reference circled, and the HTML, which part is it?

Screenshot 2: The arrow is pointing to where I want the internal reference to show, where do I put the code to achieve that? 

Thanks!