2.1.7.58 VBA Project Signature
The VBA Project Signature part is specified in [MS-OSHARED] section 2.3.2. The contentInfo field of the VBA Project Signature part MUST be a SpcIndirectDataContent structure.
Content type: application/vnd.ms-office.vbaProjectSignature
Source relationship: http://schemas.microsoft.com/office/2006/relationships/vbaProjectSignature
A package MUST contain at most one VBA Project Signature part. That part MUST be the target of an implicit relationship from the VBA project (section 2.1.7.56) part.
A VBA Project Signature part MUST NOT have implicit or explicit relationships to any part specified in this document.