This is a document from Baron de Grey that provides a tenancy to his two vassals, Thomas Twisden and Thomas Heneage.  The legal language for indentures up until 1733 commonly appeared in Latin.  This was later replaced by English as the preferred language for legal transactions.

An indenture was one of the major forms of legal documents of the time.  Indentures are known for their characteristic cut, wavy lines or peaks (dents) in the middle of the page.  Whereas, deed polls had regular edges.

The benefit of using the peaks in the middle of the page was to prove the authenticity of the document when the pieces of parchment were aligned.  This feature can be further enhanced by adding words or symbols along the cut line, which could also be matched.  

This type of document is known as a tripartite indenture.  When cut, the two pieces shown are identical and would have gone to the parties involved.  The missing third section would have been filed with the court. 

The advantage of an indenture was that two or more pieces of the document could be aligned to prove authenticity. This was further enhanced by the inclusion of words or symbols along the cut, which would also be matched. In this case, the two pieces shown are identical and would have gone to the two parties involved. The missing third section would have been filed with the court.