About the site

You can learn about the various wave on this site.
In addition, there is a quiz or test, you can learn in an enjoyable way.

Icon

	It is the icon to switch to the Japanese page.
	It is the icon to switch to the English page.
	It is the icon to switch to the previous page.
	It is the icon to switch to page HOME.
	It is the icon to switch to the next page.

About menu

In our site, there is a sub-menu and the main menu, is a menu that make up this site in the main menu. It is a menu where you can find out about a fine thing more in the sub-menu.