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Big problem with Category:Optics: many sub-cats don't appear on this page, for instance Category:Optical technology, no idea why...
184.108.40.206 01:55, 12 February 2009 (UTC)
- Because too many files are categorized in this top category (often by bots), all does not fit on one page. Unfortunately, the software then moves also subcategories to the next page. I try to clean up once in a while, but usually it does not help for long. /Pieter Kuiper (talk) 15:06, 12 February 2009 (UTC)