The Flag power supports over 190 flags.
Use (flag) or (flag#) to use the xat logo flag.
To use an animated country flag use, for the USA, (flag#wus)
Use, for example, (flag#w1us) for a non-moving flag.
Flags generally have the following format: (flag#wISO A2 country code)
If you're unaware of your country's ISO A2 code, check here and search (CTRL + F) for your country.
Some country flags have the full name instead of the said format; you can use CTRL + F here to search for your flag.