This invention relates to methods and devices for frequency distribution based on, for example, the IEEE 1588 Precision Time Protocol. The system utilizes a Virtual MCU to communicate with a plurality of MCUs. A reticle stage holds a reticle that is irradiated by the pulsed light. The cylinder identification part includes a cylinder identification resetting part for resetting the current content of the cylinder identification performed by the cylinder identification part upon determination of abnormality. Each layer of bundled confetti is arranged adjacent another in side-by-side relation with the individual elements of confetti in substantially vertical alignment within the cavity. The drain clean-out assembly includes clean-out plug and a device for selectively preventing and permitting drainage of a fluid through a drain port of the assembly.