REVTeX is an electronic publishing product of the American Physical Society. It is a set of LaTeX-based tags that can be used to prepare a physics manuscript for submission. If REVTeX tags are used consistently throughout a manuscript and published guidelines are followed exactly, it is hoped that the TeX manuscript file (called a compuscript) can be used by APS, OSA, AIP, and other participating member societies in production of author proofs.
REVTeX is physically several style files. LaTeX accesses these style files in order to recognize allowable tags and to get information about how these tags should be interpreted for a specific document. These REVTeX style files have been developed by the aforementioned groups to meet individual society needs as well as the needs of the users.