How It's Made simplify overdubbing in different languages. For example, the show currently avoids showing a narrator or onscreen host, does not often have employees of featured companies speak on camera, and keeps human interaction with the manufacturing process to a bare minimum. An off-screen narrator explains each process, often with humorous puns. Each half-hour show usually has three or four main segments, with each product getting a demonstration of approximately five minutes; exceptions are allowed in the allotted time for more complex products. Usually, every show has at least one product with a historic background note preceding it, showing how and where
Chester Rows has been blocked by enclosure or by new buildings, but in others modern buildings have retained the Rows in their designs. Undercrofts or "crypts" were constructed beneath the buildings in the Rows. The undercrofts were in stone while most of the buildings in the Rows were in timber. Today about 20 of the stone undercrofts still exist, but at the level of the Rows very little medieval fabric remains. Many of the buildings containing portions of the Rows are listed and some are recorded in the English Heritage Archive. The premises on the street and Row levels are used for