Sandbox

testing code from w:Thread:1433949 with many lines of categories, to show spill from botto of page while editing [[Category:A]] [[Category:B]] [[Category:C]] [[Category:D]] [[Category:E]] [[Category:F]] [[Category:G]] [[Category:H]] [[Category:I]] [[Category:J]] [[Category:K]] [[Category:L]] [[Category:M]] [[Category:N]] [[Category:O]] [[Category:P]] [[Category:Q]] [[Category:R]] [[Category:S]] [[Category:T]] [[Category:U]] [[Category:V]] [[Category:W]] [[Category:X]] [[Category:Y]] [[Category:Z]]