Station icons have been sourced from Wikimedia Commons.
Released under public domain, CC Public Domain,
unless listed under other licenses below:
https://creativecommons.org/publicdomain/mark/1.0/

The following icons are licensed under
CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/deed.en)

- south-korea-m.svg
