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Description |
An interpolation is text enclosed by hash characters and tells the processor to lookup internal data trees, perform function calls, etc. An interpolation is by default processed when it is encountered, and the result added to the output stack. |
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An interpolation in X-Tract is used to access XML entities and perform operations on them. An interpolation is usually delimited by enclosing it in hash (pound) characters, although some parameters to built-in commands are automatically interpolated. If you want to output a single hash character, you can escape the hash character '\\#'. |
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When an interpolation is processed, it can return either a string, or a set of XML elements which can be further processed or output. |
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An interpolation can contain an expression. An expression can be any
of the following:
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