The trucks are also equipped with storage space, tool cabinets, and workbenches. The available tools include saws, hammers, workbenches, and nails. The 1909 laboratory contains equipment, cupboards, and workbenches. Here, the company developed and produced cabinets, workbenches and other workplace equipment. Workbenches integrate two or more CASE tools and support specific software-process activities. Workbenches are fairly forgiving in the choice of wood. Monitors and workbenches are examples of semi-immersive displays. In practice, the distinction between workbenches and environments was flexible. Language workbenches were introduced and popularized by Martin Fowler in 2005. Players can switch and upgrade their weapons at the workbenches found in a level. Oxy-natural gas is cheapest and is often used on fixed workbenches. They established the Pfannenberg GmbH, which started producing workbenches. The player can upgrade weapons at workbenches using collected items. Building 30 was used exclusively for cleaning out shells; it contained 48 workbenches. The player can use the workbenches to upgrade Isaac's suit and weapons.