A buyer in the public sector has put an advert out asking for interested suppliers...

A buyer in the public sector has put an advert out asking for interested suppliers to express an interest in a potential tender activity to provide a facilities management contract to a hospital trust. The suppliers who have met that criteria are then sent a document detailing how they should submit their tender, how to price the opportunity, asks Questions relating to how they will deliver the service and gives a deadline for bids to be submitted. Which document have the suppliers ben sent?