buildVignette(file, dir=".", latex=TRUE, tangle=TRUE, quiet=TRUE, clean=TRUE,
engine=NULL, buildPkg=NULL, ...)character string speciyfing the vignette
engine to use for building the vignette. If not specified, it will
be inferred from the \VignetteEngine{} markup in the
vcharacter string specifying the vignette
package to use, if the vignette engine does not specify one.latex = FALSE, it may be a TeX file.