For normative definitions of the symbols in the standard library, see the definition files in the stdlib directory.
All documentation and tests for Robin are covered by the following BSD-compatible license, modelled after the "Report on the Programming Language Haskell 98" license:
Copyright (c)2012-2021 Chris Pressey, Cat's Eye Technologies. The authors intend this Report to belong to the entire Robin community, and so we grant permission to copy and distribute it for any purpose, provided that it is reproduced in its entirety, including this Notice. Modified versions of this Report may also be copied and distributed for any purpose, provided that the modified version is clearly presented as such, and that it does not claim to be a definition of the Robin Programming Language.