ISO/IEC 29500-1 specifies the Office Open XML (OOXML) file format’s fundamentals and document markup. This standard defines the XML-based format for word-processing documents, spreadsheets, and presentations. Acquiring a digital copy of the document schema definition can be useful for developers and implementers working with the OOXML format.
Access to this standard, or sections of it, facilitates proper implementation and interoperability of software that reads and writes OOXML files. Historically, the standardization of OOXML was intended to provide an open, standardized format that would promote long-term access to digital documents and reduce vendor lock-in. Using this standard provides an open, standardized format that would promote long-term access to digital documents.
