Document Notation

[] Rationale.

Throughout this document, the rationale for the design choices made in the interface specification is set off in this format. Some readers may wish to skip these sections, while readers interested in interface design may want to read them carefully. ( End of rationale.)

[] Advice to users.

Throughout this document, material that speaks to users and illustrates usage is set off in this format. Some readers may wish to skip these sections, while readers interested in programming in MPI may want to read them carefully. ( End of advice to users.)

[] Advice to implementors.

Throughout this document, material that is primarily commentary to implementors is set off in this format. Some readers may wish to skip these sections, while readers interested in MPI implementations may want to read them carefully. ( End of advice to implementors.)