I_remember_drawing_an_underscore_between_words_at_some_point_in_school.__ I_don't_know_what_grade_it_was.__ There's_two_skip_a_spaces_at_ the_ end_ of_a_sentence.__ We call them "skip a space" and treat them like a letter. Eventually you start making invisible skip a spaces by drawing it in the air over your paper before the next word.

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar