//R
//R/c.r
//R/dup.r
//R/pad.r
//R/sub.r
//R/case.R
//R/conv.R
//R/glue.R
//R/sort.R
//R/trim.R
//R/view.R
//R/word.r
//R/wrap.r
//R/count.r
//R/match.r
//R/split.r
//R/trunc.R
//R/detect.r
//R/interp.R
//R/length.r
//R/locate.r
//R/remove.r
//R/subset.R
//R/unique.R
//R/extract.r
//R/flatten.R
//R/replace.r
//R/modifiers.r