same theater. Hemp rigging system A hemp fly system, so named for the manila hemp rope that was once common in theatrical rigging, is the oldest type of fly system, certainly the simplest type of system. Recent research shows that the hemp system, although known for centuries, was not much used. The hemp system gained popularity first in the United States in the mid nineteenth century. It soon gained popularity in England, as it was inexpensive and provided a great deal of flexibility for moving scenery. Hemp systems are also known as rope line systems, or simply as rope systems. Stage rigging techniques draw largely from ship rigging, as the earliest stagehands were actually sailors seeking employment while on shore leave. Because of this, there is common terminology between the two industries. For example, the stage is referred to as a deck in the manner of a ship's deck. Other expressions and technology that overlap the nautical and theatrical rigging worlds include: batten, belay, block, bo'sun, cleat, clew, crew, hitch, lanyard, pinrail, purchase, trapeze, and trim. In a typical hemp system, a "line set" consists of multiple hemp lines running from a batten above the stage up to the grid, through loft blocks to a headblock and then down to the fly floor, where they are tied off in a group to a belaying pin on the pin rail. The lift lines and hand (operating) lines are one and the same. Typically, a lift line runs from the sand bag (counterweight) assigned to a specific line set, up to "a single loft block" above the fly floor and back down to the fly floor. A trim clamp or a "Sunday" (a circle of wire rope) is used to attach this sandbag to the "line set" to balance the load placed on the batten. The sandbags are usually filled to weigh slightly less than the load, making the line set "Batten Heavy". When the flyman wishes to fly a batten (scenery or lights) "In" (i.e., to the floor/deck), the flyman unties the "High" trim and allows the batten to travel "In" while the sandbags travel "Out" toward the grid. When the flyman wishes to fly the batten "Out", he pulls down on the operating lines (leaving them tied off at the pin rail at "Low" trim) and the batten flies out as the sand bag descends to the fly floor. This