Category:Sandbox/template

Library of Congress Classification Dewey Decimal Classification categorization note
 * main /sub/class(es)  -- 
 * main /sub/class(es)  -- 
 * main/“” sub/class(es) | (except for such-and-such)
 * this is such-and-such as an LCC main class or whatever, but Wikipedia categorizes this in such-and-such

or
 * but LCC also uses this for that, under the hierarchically broader term such-and-such