A character vector of symbols (i.e.,
punctuation) that strip should keep.
The default is to strip every symbol except apostrophes
and a double tilde "~~". The double tilde
digit.remove
logical. If TRUE strips digits from
the text.
apostrophe.remove
logical. If TRUE removes
apostrophes from the output.
lower.case
logical. If TRUE forces all alpha
characters to lower case.
Value
Returns a vector of text that has been stripped of
unwanted characters.