sm_char: Select multiple character constructor
In caldwellst/koborg: What the Package Does (One Line, Title Case)

'sm_char()' constructs a select multiple character vector, each value in the vecotr corresponds to the selected options for that survey row in string format. Can be constructed from a character vector itself.

sm_char(
  x = character(),
  relevant = NA,
  choice_names = NA,
  choice_labels = NA,
  q_name = NA,
  label = NA,
  constraint = NA,
  binary_sep = "/"
)