RLRL
rlrl is a string of letters without a single established meaning in major reference works. In published sources, rlrl appears only as a fragment, placeholder, or identifier in varied contexts, and there is no consensus on a formal definition or usage. As a result, rlrl is best understood as a non-standard label rather than a term with a fixed meaning.
Possible contexts include: computing and programming, where rlrl is sometimes used as a simple literal, sample
Because there is no canonical reference, any interpretation of rlrl should be grounded in the particular source