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Data Repositories and mzXML File Format   Most of the current
mass spectrometers can translate or save the acquisition data
using the mzXML schema. This standard is an XML (eXtensible
Markup Language)-based common file format developed by the
Sashimi project to address the challenges involved in
representing data sets from different manufacturers and from
different experimental setups into a common and expandable
schema. mzXML files used in hyphenated mass spectrometry are
usually very large, the MZXMLINFO function allows you to obtain
basic information about the dataset without reading it into
memory, for instance the number of scans, the range of the
retention time, and the number of tandem MS instruments
(levels):  info =                               Filename:
'7MIX_STD_110802_1.mzXML'                             FileSize:
26789612                        NumberOfScans: 7161
StartTime: 'PT0.00683333S'