Syntext today announced the availability of Serna for Mac OS X. Version 1.5 has many new and enhanced features, including: XML catalog support, enhanced UNICODE symbol manipulation, rapid development XSL template library, basic XHTML support, and out-of-box support for NITF (News Industry Text Format), Docbook 4.3, and DITA 1.3. Pricing and other information is available from the Web site.