This is a block specific to this product's attribute set - all products that have the same attribute set has the same block such as this. This can be used to define each specifications that belong to the attribute set. As of the time this was created, all products belong to the attribute set "Kite" therefore this is for testing and demonstration. Note that this block is enabled for "All Store Views" so it's the same on all languages. To translate the specifications for various languages, create individual static blocks set to the appropriate Store View that correlates to the Language.

What to use as Identifier of the block?

type "attribute_set_" followed by the name of the attribute set in lowecase, followed by "_specifications".

So if an attribute set is named "Example_Name", then you would type "attribute_set_example_name_specifications".

How to make sure the popup scrolls to the exact definition that I clicked, for example if I click on "Højde" that opens this popup, it would scroll to the definition of "Højde"?

Find out the attribute code of the attribute you wish to link, then set that as an ID for the first html element that belongs to the attribute definition.

For example, "Højde" attribute's attribute-code is "height", so when you have a similar html markup for the definition of "Højde":

<dt>Højde</dt>
<dd>Højde is height. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</dd>

you would set the ID on the DT element like this:

<dt id="height">Højde</dt>
<dd>Højde is height. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</dd>

The content below is for testing and demonstration: