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A DAISY Pipeline 2 module containing scripts for converting between and validating DTBook, HTML and EPUB3 according to nordic markup guidelines.
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    Nordic EPUB3 Package Document rules

    
    
    
    
    

    
        
            [opf1] the OPF file must have the extension .opf
            [opf1] the filename of the OPF must be package.opf
            [opf1] the OPF must be contained in a folder named EPUB
        
    

    
        
            [opf2] the version attribute must be 3.0
            [opf2] on the package element; the unique-identifier-attribute must be present and equal 'pub-identifier'
            [opf2] on the package element; the dublin core namespace (xmlns:dc="http://purl.org/dc/elements/1.1/")
                must be declared on the package element
            [opf2] on the package element; the prefix attribute must declare the nordic metadata namespace using the correct namespace URI (prefix="nordic:
                http://www.mtm.se/epub/")
            [opf2] on the package element; the prefix attribute must declare the a11y metadata namespace using the correct URI (prefix="a11y:
                http://www.idpf.org/epub/vocab/package/a11y/#")
        
        
            
            [opf2] on the package element; the prefix attribute must declare the '' prefix
        
    

    
        
            [opf3a] there must be exactly one dc:identifier element
            [opf3a] the id of the dc:identifier must equal the value of the package elements unique-identifier
                attribute
            [opf3a] The identifier ("") must start with a upper- or
                lower-case letter (A-Z or a-z), or a digit (0-9).
            [opf3a] The identifier ("") must end with a upper- or
                lower-case letter (A-Z or a-z), or a digit (0-9).
            [opf3a] The identifier ("") must only contain upper-
                or lower-case letters (A-Z or a-z), digits (0-9), dashes (-) and underscores (_).

            [opf3b] exactly one dc:title  must be
                present in the package document.
            [opf3b] the dc:title  must not be empty.

            [opf3c] exactly one dc:language  must be present in the package document.
            [opf3c] the language code ("") must be either a "two-letter lower case" code or a "two-letter lower case + hyphen + two-letter upper case" code.
            

            [opf3d] exactly one dc:date  must be
                present
            [opf3d] the dc:date () must be of the format
                YYYY-MM-DD (year-month-day)

            [opf3e] exactly one dc:publisher  must be present
            [opf3e] the dc:publisher cannot be empty
            

            [opf3f] exactly one last modified date  must be present
            [opf3f] the last modified date () must use UTC time and be on the form "CCYY-MM-DDThh:mm:ssZ"
                (year-month-date "T" hour:minute:second "Z")

            [opf3g] at least dc:creator (i.e. book author)  must be present

            

            [opf3h] exactly one dc:source  must
                be present
            [opf3h] the dc:source
                    ("") must start with 'urn:isbn:' or 'urn:issn'
            [opf3h] the ISBN or ISSN in dc:source ("") can only contain numbers and hyphens, in addition to the 'urn:isbn:' or 'urn:issn:' prefix. The last digit can also be a 'X' in some
                ISBNs.

            [opf3i] there must be exactly one meta element with the property "nordic:guidelines" 
            [opf3i] the value of nordic:guidelines must be '2015-1'

            [opf3j] there must be exactly one meta element with the property "nordic:supplier" 
        
    

    
        
            [opf5a] a NCX must be present in the manifest (media-type="application/x-dtbncx+xml")
        
    

    
        
            [opf5b] the NCX must be located in the same directory as the package document, and must be named "nav.ncx" (not "")
        
    

    
        
            [opf6] the toc attribute must be present
            [opf6] the toc attribute must refer to an item in the manifest
        
    

    
        
            [opf7] the Navigation Document must be located in the same directory as the package document, and must be named 'nav.xhtml' (not "")
        
    

    
        
            [opf8] all images must be stored in the "images" directory (which is a subdirectory relative to the package document). The image file
                    "" is located in "".
        
    

    
        
            [opf9] all content files must be located in the same directory as the package document. The content file file "" is located in "".
        
    

    
        
            [opf10] Cover must be marked as secondary in the spine (i.e. set linear="no" on the itemref with idref="", which refers to the
                cover)
        
    

    
        
            [opf11] Rearnotes must be marked as secondary in the spine (i.e. set linear="no" on the itemref with idref=", which refers to the
                rearnote)
        
    

    
        
            [opf12a] The content document "" has a bad filename. Content documents must match the
                "[dc:identifier]-[position in spine]-[epub:type].xhtml" file naming convention. Example: "DTB123-01-cover.xhtml". The identifier are allowed to contain the upper- and lower-case
                characters A-Z and a-z as well as digits (0-9), dashes (-) and underscores (_). The position is a positive whole number consisting of the digits 0-9. The epub:type must be all
                lower-case characters (a-z) and can contain a dash (-). An optional positive whole number (digits 0-9) can be added after the epub:type to be able to easily tell different files with
                the same epub:type apart. For instance: "DTB123-13-chapter-7.xhtml".
        
    

    
        
            
            
            
            
            
            

            [opf12b_identifier] The "identifier" part of the filename ("") must be the same as
                declared in metadata, i.e.: "".

            [opf12b_type] "" is not a valid type.  The filename of content documents must end with a epub:type defined in either the EPUB3 Structural Semantics Vocabulary (http://www.idpf.org/epub/vocab/structure/#) or the
                Z39.98-2012 Structural Semantics Vocabulary (http://www.daisy.org/z3998/2012/vocab/structure/).

            [opf12b_position] The numbering of the content documents must all have the equal number of digits.

            [opf12b_position] The numbering of the content documents must be unique for each content document.  is also used by another content document in the
                OPF.

            [opf12b_position] The numbering of the content documents must start at 1 and increase with 1 for each item.

            [opf12b_position] The  itemref (<iremref id="" href="...">) should refer to <item href="">.
        
    

    
        
            [opf13] the Navigation Document must be identified with the attribute properties="nav" in the OPF manifest. It currently 
        
    

    
        
            
            [opf14] the Navigation Document must not be present in the OPF spine
                (itemref with idref="").
        
    

    
        
            [opf15a] The cover image must have a properties attribute containing the value 'cover-image': 
        
    

    
        
            [opf15b] The image with property value 'cover-image' must have the filename 'cover.jpg':