[1] Its purpose is to provide materials and knowledge to the general public, free of charge.

Beginning in 2020, many of its materials have been available for non-commercial and even commercial use.

[1] As of February 2023[update], it had a total of 26,131 items in its collection.

[1] In 2020, 36,869 items were downloaded by the public, with usage continually increasing since.

[3] This South Korea-related article is a stub.