This document is an indenture for secured advances between a contractor and the President of India. Secured. Advance on Non- perishable. Materials.Most Maryland court forms and brochures are available in this index. 33.4 The Secured Advance paid shall be recovered as stated in the Contract Data. Payment of Secured Advance shall be applicable if provided in the Contract Data. (Referred to in paragraphs 10.2. Secured Advance on Materials. (H) Indenture For Secured Advances.