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A general description is here.
dbeta(.., ncp) is now more accurate for large ncp.
determinant(matrix(,0,0)) now returns a correct "det" result.
R CMD now sets TEXINPUTS to .;%R_HOME%/share/texmf;%TEXINPUTS%; by exact analogy with Unix-alikes (that is, including the current directory before R's texmf directory).