| List I (punctuation marks in LCSH) | List II ( Use) | ||
| A | Comma | 1 | used to designate a subdivision |
| B | Dash | 2 | to separate parallel terms in headings |
| C | Hyphen | 3 | used to indicate multiple headings and multiple subdivisions |
| D | Square Brackets | 4 | used to indicate years of open date in addition to its normal use in compound words |
1
A-1, B-2, C-4, D-3
2
A-2, B-1, C-3, D-4
3
A-2, B-1, C-4, D-3
4
A-4, B-3, C-2, D-1