2.1.7.56 VBA Project
The VBA Project part is specified in [MS-OVBA].
Content type: application/vnd.ms-office.vbaProject
Source relationship: http://schemas.microsoft.com/office/2006/relationships/vbaProject
A package MUST contain at most one VBA Project part, which MUST be the target of an implicit relationship from the workbook (section 2.1.7.61) part.
A VBA Project part is permitted to contain implicit relationships to the following parts specified in this document:
A VBA Project part MUST NOT have implicit or explicit relationships to any other part specified in this document.