Grooming an heir apparent is one portion of the story, marketing him assiduously is the more important part. And the DMK is a past master at this art. So, no wonder, Udhayanidhi Stalin, the son of chief minister M.K. Stalin, was the guest of honour when the foundation stone was laid for new tenements of the Slum Clearance Board in Chennai. The function was at Vyasarpadi, away from Udhayanidhi’s constituency.