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# XSL-FO conditional-page-master-reference Object [ XSL-FO Reference Manual](#) * * * ## Definition and Usage The `` object specifies a page-master to be used when the defined conditions are met. This allows different pages to use different page-masters. (For example, even and odd pages, the first page, blank pages.) Three attributes, `odd-or-even`, `blank-or-not-blank`, and `page-position`, specify the conditions. The `` is considered true only when all three conditions are met. * `page-position` is true if the generated page has the specified position (first, last, rest, any). * `odd-or-even` is true if the value is "any" or if the parity of the value matches the page number. * `blank-or-not-blank` is true if the value is "not-blank" and the page has areas generated by descendants of ``, or if the value is "blank" and the page has no areas from ``, or if the value is "any". * * * ## Syntax ## Attributes | Attribute | | :--- | | blank-or-not-blank | | master-reference | | odd-or-even | | page-postion | * * XSL-FO Reference Manual](#)