Action Safe option

I am just starting to use fotomagico and was wondering what the “Action Safe” option (View—> Show Action Safe Area) was used for. Any help would be appreciated. Thanks

The Safe areas are used in TV broadcasting since some TVs used to crop off areas at the edges. More information can be found at http://en.wikipedia.org/wiki/Safe_area_(television)

Thanks. Is it relevant if making a DVD to play on a flatscreen tv at a wedding reception?