CSS related | Edit Page: Product Display > Product Display Layout

[Barrett]

On the advanced mode of Product Display Layout tab; you can see where it conveniently writes all the code for active custom fields which is great.
That allows me to insert.

<mvt:item name="product_display" />

into a custom main product template (Sebenza) without having to manually edit for every custom field change.

My issue is just where do the <b> tags comes from ???
Is there a place to turn off this formatting or is it generated internally ?
We are trying to migrate to an all CSS model for formatting. The current release injects formatting from several "legacy areas" that may have been great for point and click changes, but at least serve to confuse me in keep tracking of what is coming from where besides our style sheet.

<mvt:if expr="NOT ISNULL l.settings:product:customfield_values:customfields:ALFREE">
&mvt:customfield_names:customfields:ALFREE;:
<b>&mvt:product:customfield_values:customfields:ALFREE;</b><br>
</mvt:if>
<mvt:if expr="NOT ISNULL l.settings:product:customfield_values:customfields:DIM">
&mvt:customfield_names:customfields:DIM;:
<b>&mvt:product:customfield_values:customfields:DIM;</b><br>
</mvt:if>