Hello Matt, Unfortunately there is no XML specialized feature in Oxygen for setting an attribute for a set of files. We do have a feature request for this, but it has not been implemented yet. However, one workaround for this is to use the Find/Replace in Files with the appropriate regular expressions and filters on the DITA Map hierarchy. It's a text replacement tool, but it is XML-aware and it supports XPath filters. Steps: 1. First create (or make sure you have) a backup copy of your files (preferably the entire project), just in case anything goes wrong. 2. If you already have xml:lang set on the root element of some of the files, you should first remove them (otherwise skip to step 3): In the DITA Maps Manager right click on the map root and from the contextual menu pick *Find/Replace in Files*. Fill the fields this way: *Text to find: */.*/ *Regular expression**:* Enabled *Restrict to XPath:* //*/@xml:lang/ *Replace with:* (empty) *Scope:* Current DITA Map hierarchy *Include **files:* *.* Press *Replace All...* and Preview the operation to make sure that it does what is expected of it (it should remove the existing xml:lang attributes). 3. To add the xml:lang set on the root element of the files after the last attribute, use again the *Find/Replace in Files* and use the following field values: *Text to find: */.*/ *Regular expression**:* Enabled *Restrict to XPath:* //*/@*[last()]/ *Replace with:* /$0 xml:lang="en_US"/ (modify the value to the one you want to set) *Scope:* Current DITA Map hierarchy *Include **files:* *.* Press *Replace All...* and Preview the operation to make sure that it does what is expected of it (xml:lang should be added after the last attribute of each root element ). Regards, Adrian Adrian Buza oXygen XML Editor and Author Support Tel: +1-650-352-1250 ext.202 Fax: +40-251-461482 support@oxygenxml.com http://www.oxygenxml.com On 04.11.2013 19:32, KAATMAN Matthew wrote:

Is there a way to select a map and apply an xml:lang across every file in that map to the main topic type tag?

Thanks! Matt

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