This function resets the following options:
setTikzDefaults(overwrite = TRUE)Should values that are allready set in options() be
overwritten?
Nothing returned.
tikzDefaultEngine
tikzLatex
tikzDocumentDeclaration
tikzFooter
tikzLatexPackages
tikzXelatexPackages
tikzLualatexPackages
tikzMetricPackages
tikzUnicodeMetricPackages
tikzSanitizeCharacters
tikzReplacementCharacters
tikzPdftexWarnUTF