In TKU July 2009 the Content Engine Server pattern was modified in two ways. Firstly, the pattern now stops sooner if host is identified as a UNIX platform. Secondly, the generated Content Engine Server Software Instance is now linked to the host it is running on.
In TKU August 2009 the trigger of the Content Engine Server pattern was modified in having 'created, modified' changed to 'created, confirmed'. The comment concerning the stopping of the pattern if contentengine_install_root is not known was made clearer with regard to the UNIX platform.
In TKU April 2011 the pattern module was altered to allow a second-order Software Instance to age out correctly.
In TKU May 2012 some slight improvements were made to the ageing process for old software instances.