Template:USA Indoor Track and Field Championships winners in men's 400 m

When transcluded, will add pages to category Category:USA Indoor Track and Field Championships winners. Use parameter |nocat=y to supress.

This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

To change this template's initial visibility, the |state= parameter may be used:

• {{USA Indoor Track and Field Championships winners in men's 400 m|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
• {{USA Indoor Track and Field Championships winners in men's 400 m|state=expanded}} will show the template expanded, i.e. fully visible.