Billiard table manufacturers have produced convertible billiard tables (in the broad sense) that double as dining tables or as table tennis, foosball, or air hockey, tables, with removable hard tops. Home pool tables, which often lack a ball-return system, are commonly either 4 × 8 ft or 3.5 × 7 ft models, a medium between 3 × 6 ft. bar/pub tables and 4.5 × 9 ft tournament-size models. Low-end tables tend toward the smaller range, and may have MDF or wood beds as an alternative to slate; those with light-weight beds may be foldable for storage, as with table tennis. Miniature tables
Billiard room clearance around the pool table is ideal. Interior designer Charlotte Moss believed that "a billiard room is synonymous with group dynamics. It's where you mix drinks and embark on a little friendly competition..." Billiards probably developed from one of the late-14th century or early-15th century lawn games in which players hit balls with sticks. The earliest mention of pool as an indoor table game is in a 1470 inventory list of the accounts of King Louis XI of France. Following the French Revolution and the Napoleonic Wars, billiard rooms were added to some famous 18th-century cafés in Paris and other