Types of secondary legislation: These very basic descriptions are based upon The ABC of EU Law, pp. 98-110. Please see that text for a more complete description of the forms of EU legislation, as well as two other forms of non-binding legal acts (recommendations and opinions) and three forms of actions for shaping the legal order (resolutions, declarations and action programs). See also Getting Started for additional sources that describe the legislative process and the documentation system.
Numbering of EU documents in the OJ L Series:
For regulations and directives before the year 2000, only the last two digits of the year were included in the numbering. Starting January 1, 2015, documents published in the OJ L Series are numbered in the format (domain, e.g., EU) YYYY/sequential #. For examples and exceptions, see Harmonizing the Numbering of EU Legal Acts.