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A general description is here.
‘mcparallel()’ gains an option ‘detach=TRUE’ which allows to execute code independently of the current session. It is based on a new ‘estranged=TRUE’ argument to ‘mcfork()’ which forks child processes such that they become independent of the parent process.
The ‘pdf()’ device omits entirely circles and text at extremely small sizes, since some viewers were failing on such files.
Where supported, ‘tools::texi2dvi()’ limits the number of passes tried to 20.
‘tools::checkFF()’ reports on ‘.C’ and ‘.Fortran’ calls with ‘DUP = FALSE’ if argument ‘check_DUP’ is true. This is selected by ‘R CMD check’ by default.
R would try to kill processes on exit that have pids ever used by a child process spawned by ‘parallel’ even if those were not actually its children.