The Ontario Junior Men's Field Lacrosse League is governed by the OJMFLL Operating Policy.
This policy was officially adopted by the OJMFLL Board for the 2008 Season after a succesful Board-Approval trial in 2007. The policy directly relates to the operation of the League, and not to the specific play on the field (there are some exceptions).
On-field play is based on Men's ILF rules. Again, there are some exceptions to this, to allow for the League to have a consistent style of play from Minor through Junior in Ontario & Canada.
Both documents are available for reference.