Popular Analphabetic Characters Found in Japanese Typefaces

Character Usage
Dialogue, quotations, to place special emphasis on meaning. Called "kagi-kakko", most widely used form.
Product names, magazine names, quotation inside quotation.
Annotation, explanation, ranks, grades
Newly-coined, rare, imprecise or specialized terminology, or when using a specialized or alternate meaning of an everyday term
Numerical formulas
Other "kakko" types. Correct usage is left to the devices of the writer, though once a system is devised, it must be excuted consistently thoughout the work.
Connects words to create unified terms, connects parts of non-Kanji proper nouns.
Post office, address
Listing notation based on the days of the week.
Popular Japanese bullet markers
"Kabushiki-Gaisha", the suffix for a joint-stock company
"Yugen-gaisha". the suffix for an incorporated company