87. The content of the form entitled “Promise to Purchase” is prescribed in Schedule 1, that of the form entitled “Annex A — Immovable” is prescribed in Schedule 2, that of the form entitled “Annex G — General” is prescribed in Schedule 3, that of the form entitled “Counter-Proposal to a Promise to Purchase” is prescribed in Schedule 4 and that of the form entitled “Amendments and Notice of Fulfilment of Conditions” is prescribed in Schedule 5.