Implicit phasing for R6RS libraries
Abdulaziz Ghuloum, R. Kent Dybvig · 2007
The forthcoming Revised6 Report on Scheme differs from previous reports in that the language it describes is structured as a set of libraries. It also provides a syntax for defining new portable libraries. The same library may export both procedure and hygienic macro definitions, which allows procedures and syntax to be freely intermixed, hidden, and exported.