CFR Index and Finding AidsThe CFR Index and Finding Aids volume is revised once a year as of January 1. It contains: A subject/agency index for rules currently codified in the Code of Federal Regulations (CFR); a list of agency-prepared indexes appearing in individual CFR volumes; a table of laws and Presidential documents cited as authority for regulations currently codified in the CFR; a list of CFR titles, chapters, subchapters, and parts; an alphabetical list of agencies appearing in the CFR.