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index.topics.dtm - icon Digital technical map
index.topics.hist - icon Historical maps
index.topics.verej - icon For the public
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index.topics.meta - icon Metadata
index.topics.open - icon Open data
index.topics.serv - icon Map services
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index.topics.up - icon Urban planning
index.topics.twin - icon Digital twin
index.topics.proj - icon Plans and projects
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