The Duplo category had 573 entries and was unwieldy to browse. Today we created
a new category titled Duplo, Building and moved 169 parts into the new
category (leaving behind 404 of the original 573 entries).
The definition of the new category is:
For Duplo items that are part of habitable structures such as walls, roofs,
windows, and doors, not including building accessories.
This change will make it easier for current and future Duplo fans to locate items
and was also recorded here: