# Additional serialization parameters

Saxon provides a number of additional serialization parameters, and one additional serialization method: these have names in the Saxon namespace. These can be specified as attributes on the `xsl:output` and `xsl:result-document` elements (XSLT-only), in the Query prolog (XQuery only), or as extra parameters on the Query or Transform command line. They can also be specified in the query or transformation API.

For example, to request an indentation depth of one column, specify `!{http://saxon.sf.net/}indent-spaces=1` on the command line.

In XQuery, Saxon allows both standard serialization options and Saxon-specific serialization parameters to be specified by means of an option declaration in the query prolog. For example:

    declare namespace saxon="http://saxon.sf.net/";
    declare option saxon:output "indent=yes";
    declare option saxon:output "saxon:indent-spaces=3";

The standard serialization parameters described in The W3C Serialization specification are all available, namely:

- byte-order-mark

- cdata-section-elements

- doctype-public

- doctype-system

- encoding

- escape-uri-attributes

- include-content-type

- indent

- media-type

- method

- normalization-form

- omit-xml-declaration

- standalone

- undeclare-prefixes

- use-character-maps (only useful in XSLT)

- version

The Saxon-supplied serialization parameters are described on the following pages.

- The method attribute

- The saxon:double-space attribute

- The saxon:indent-spaces attribute

- The saxon:suppress-indentation attribute

- The saxon:character-representation attribute

- The saxon:next-in-chain attribute

- The saxon:require-well-formed attribute

- The saxon:supply-source-locator attribute

- The saxon:xquery serialization method

- User defined serialization attributes

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