code: func newPlainText(ln *line, rslt *result, src *source, parent element, opts *Options) *plainText {
  	return &plainText{
  		elementBase: newElementBase(ln, rslt, src, parent, opts),
  		insertBr:    ln.tokens[0] == doublePipe,
  	}
  }
docs: // newPlainText creates and returns a plain text.