In addition to data and document content in XML markup, files in the ZIP package can include other text and binary files in formats such as PNG, BMP, AVI, PDF, RTF, or even an already packaged ODF file. The ISO 19165:1-2018 recommends the use of the Open Packaging Conventions to implement the Geospatial Package defined in the Open Archival Information System.īoth the XML Paper Specification (XPS) and Office Open XML (OOXML) use Open Packaging Conventions (OPC), which provide a profile of the common ZIP format. The draft expired in 2009, the specified syntax is incompatible with the Internet Standard for URI schemes (STD 66, RFC 3986). Microsoft submitted a draft in 2006 to the Internet Engineering Task Force for a "pack" URI Scheme ( pack://) to be used for URI references to OPC-based packages.
The ZIP format is not specified by any international standard but has widespread community and developer acceptance. Note: The older first edition of ECMA-376 makes an informative ( i.e., non-normative) reference to the newer PKWARE Inc's ".ZIP File Format Specification" version 6.2.1 (2005). ZIP File Format Specification version 6.2.0 (2004), and supplements it with a normative set of clarifications. The ISO/IEC 29500-2:2008 specification and the second edition of ECMA-376 makes a normative reference to PKWARE, Inc.'s. The OPC is specified in Part 2 of the Office Open XML standards ISO/ IEC 29500:2008 and ECMA-376.
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