Defined in file omssa.asn
C++ class: CMSHitSet

        number INTEGER, -- unique number of spectrum
        error MSHitError OPTIONAL,               -- error, if any
        hits SEQUENCE OF MSHits OPTIONAL,        -- set of hit to spectrum
        ids SEQUENCE OF VisibleString OPTIONAL,  -- filenames or other ids of spectra searched
        namevalue SEQUENCE OF NameValue OPTIONAL,-- extra info: retention times, etc.
        settingid INTEGER OPTIONAL,              -- id of the search setting used
        userannotation MSUserAnnot OPTIONAL      -- allows users to flag certain