...a "Mission Statement" is a short description of your policy, purpose, or philosophy. Most companies have a Mission Statement which is posted in their lobby, break areas, etc.
Basically, it provides the direction for all company associated activities. Proposals must meet the guidelines detailed by the mission statement; if not, they must be amended or discarded.
Usually, company mission statements say something about maintaining product excellence to promote customer satsifaction and improve company standing in the industry.
I would like for my mission statement to say something about promoting the artistic community, honoring and showcasing cartoon art, creating a meeting place for artists and fans to meet in a non-threatening environment, etc.
Say, that's not too bad... I need to rewrite these into the mission statement proposal.