Petit Chou
Petit Chou is a town straddling the border between Quirm and Ankh-Morpork. It also has a Morporkian name, Little Green. The Quirm main line runs through here and trains stop here in both directions to allow for papers to be examined and customs checks to be made. As Quirmian customs checks are a leisured unhurried affaire, this allows ample time for Fat Sally to dispense food and beverages and nobody worries too much.