create_exercise_data_frame: Create an exercise data frame
Description
Creates an empty exercise data frame.
Usage
create_exercise_data_frame()
Arguments
Value
A data frame.
See Also
Other support functions:
create_exercise_csv(),
create_exercise_excel(),
read_exercise_csv(),
read_exercise_excel(),
set_pending_answers(),
vector_to_string(),
write_exercise_csv()