Question: When exactly was it that the box lacrosse was introduced?
About the article "Lacrosse", section "Box lacrosse".

Candidate passages:
The 2003 ILF World Indoor Lacrosse Championship was the 1st ILF World Indoor Lacrosse Championship, an international box lacrosse tournament that is held every four years and was sponsored by the International Lacrosse Federation (ILF).
It took place from May 15–24, 2003 in Hamilton, Kitchener, Mississauga, and Oshawa, Ontario, Canada. 
IL Indoor is a National Lacrosse League news blog.
Formerly known as "NLL Insider", it was started in 2005 as a spinoff to Inside Lacrosse so that Inside Lacrosse could focus on field lacrosse while IL Indoor would focus on box lacrosse.
It features its own forums similar to The Lacrosse Forums.
Some of the writers are former NLL players including Teddy Jenner, Brian Shanahan, Marty O'Neill, and Tom Ryan. 
Up until the 1930s, all lacrosse was played on large fields outdoors.
The owners of Canadian hockey arenas invented a reduced-size version of the game, called box lacrosse, as a means to make more profit from their arena investments, and because severe winter weather in many areas limits outdoor play.
Since 1985, when the Canadian University Field Lacrosse Association (CUFLA) began operating a collegiate men's league, field lacrosse has witnessed a revival in Canada.
There are now 12 varsity teams.
In 1994, Canada declared lacrosse its national summer sport in the .
In 1987, a men's professional box lacrosse league was started, called the Eagle Pro Box Lacrosse League.
This league changed its name to the Major Indoor Lacrosse League, then later to the Lacrosse League.
It grew to encompass men's lacrosse clubs in 14 cities throughout the United States and Canada. 
The Federation of International Lacrosse (FIL) is the international governing body of lacrosse and it oversees field, women's and box lacrosse competitions.
In 2008, the "International Lacrosse Federation" and the "International Federation of Women's Lacrosse Associations" merged to form the FIL.
The former "International Lacrosse Federation" was founded in 1974 to promote and develop the game of men's lacrosse throughout the world.
The FIL now sponsors the World Lacrosse Championship and Under-19 World Lacrosse Championships which are played under field lacrosse rules.
It also oversees the World Indoor Lacrosse Championship played under box lacrosse rules, and the Women's Lacrosse World Cup and an under-19 championship under women's lacrosse rules. 
Lacrosse has a minor presence, tending to be played by girls at private schools, although there have been some male university teams as well.
Field lacrosse is the main sport, but box lacrosse is also played.
It is always at amateur level.
However, lacrosse in Scotland goes back to 1890 at St Leonards School, Fife, where women's lacrosse had been introduced by Louisa Lumsden.
Lumsden brought the game to Scotland after watching a men's lacrosse game between the Canghuwaya Indians and the Montreal Lacrosse Club.
One of Lumsden's students, Rosabelle Sinclair, established the first women's lacrosse team in the United States was at the Bryn Mawr School in Baltimore, Maryland.
Scotland fields three national teams - men's, women's and an indoor side