Template:Wikipedia how-to

From Holocaustmap

{{#if: ||}}

Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.{{#if:Template:Information page/doc| [[Category:Template documentation pages{{#translation:}}]] }}