# Sablotron Guide and Reference

Named buffers | .Implementation Notes
#### Summary Sablotron can store XML strings and parsed trees to so called named buffers.
#### Description Sablotron introduces an URI scheme 'arg:' which enables one to use strings and parsed trees in named memory buffers. Named buffers are can be set using `SablotAddArgBuffer` or `SablotAddArgTree` functions. The content of buffers can be accessed with the `document()` function or `xsl:include/import` instructions (e.g. document('arg:/my_buffer')/root). The buffer names can have a tree-like structure so that a relative reference from a document in a buffer can be resolved as pointing to another buffer. For instance, if we invoke Sablotron specifying that a buffer named `/mybuf/1` contains the string "<a>contents</a>", then the expression `document('arg:/mybuf/1')/a` has string-value `"contents"`. If the document in `arg:/mybuf/1` contained a relative URI reference `"../theirbuf/2"` then this would be resolved as pointing to `"arg:/theirbuf/2"`.
#### See Also
Groups | [ .Implementation Notes ]
Entries | [ SablotAddArgBuffer | SablotAddArgTree ]

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revision 03-06-30
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