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As one can see from the above, there are a number of algorithms that taken together implement DFDL's unparsing.

Furthermore, all of the above mechanisms can be composed recursively - that is, an element whose length is needed for an OVC, that element may be of complex type, and within that complex type may be other OVC elements, referring to yet later elements. All these must compose properly so that a DFDL format that contains an OVC can be combined together into a larger format without constraint on how that larger format works.

Each of the above topics is deserving of a design note of its own. The However, the subject of this page is the I/O (output really) layer's buffering system.

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