rl1
rl1 is a compact alphanumeric label that appears in multiple technical contexts, and there is no single, universally accepted definition for it. Its meaning is determined by the domain, source, and context in which it is used. In practice, rl1 often functions as a name or code rather than a descriptive term, and it may refer to a specific file, dataset, software component, model version, or parameter within a particular project or publication.
Because rl1 is context-dependent, readers should consult the surrounding material to interpret its intended meaning. In
Origin and usage notes: the lack of a fixed definition means rl1 can vary significantly between communities,