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A general description is here.
‘norm(., type)’ now also works for complex matrices.
‘kappa(., exact=TRUE, norm=*)’ now works for all norms and also for complex matrices. In symmetric / triangular cases, new argument ‘uplo = "U" | "L"’ allows to specify the upper or lower triangular part.
Plain-text help no longer outputs spurious colons in the arguments list (for multi-line \item labels in the Rd source).
‘kappa()’ and ‘rcond()’ work correctly in more cases; ‘kappa(., norm="2")’ now warns that it computes the 1-norm with (default) ‘exact = FALSE’; prompted by Mikael Jagan's quite comprehensive PR#18543.
Rd skeletons generated by ‘prompt()’ or ‘promptData()’ now use a dummy title (so R CMD build works). ‘tools::checkRdContents()’ has been updated to detect such template leftovers, including from ‘promptPackage()’.