A dobby loom is a type of floor loom that controls all the warp threads using a device called a dobby. A dobby loom is an alternative to a treadle loom. A manual dobby uses a chain of bars or lags each of which has pegs inserted to select the shafts to be moved. A computer-assisted dobby loom uses a set of solenoids or other electric devices to select the shafts. Activation of these solenoids is under the control of a computer program. Dobby looms expand a weaver's capabilities and remove some of the tedious work involved in designing and producing fabric. Many newer cloth design techniques such as network drafting can only reach their full potential on a dobby loom.