"Secured Obligations" means all Obligations in respect of the Notes or this Indenture. It outlines the terms for advances provided to the contractor for materials to be used in construction.Complete documentation for each trust indenture is of utmost importance. Appointment to Fill a Vacancy in Office of Trustee. In the case of a bankruptcy indenture, it may be used to prove a claim of a property. In real estate, an indenture would be the deed between two parties.