((CSK))
Renders a flag icon and wikilink to Czechoslovakia. This template is equivalent to ((flag|Czechoslovakia))
, but is named after the standard three letter ISO 3166-1 alpha-3 country code for Czechoslovakia as a shorthand editing convenience.
You can also use ((TCH))
(which is a redirect to this template) because "TCH" is the IOC code and FIFA code for Czechoslovakia.