Print a welcome message
(iLoopInit: StringAdd).self
(iLoopInit: StringFormat).self
(iLoopInit: ArrowAssoc[ILoopInit]).x
(Since version 2.10.0) Use leftOfArrow
instead
(iLoopInit: Ensuring[ILoopInit]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Machinery for the asynchronous initialization of the repl.