About Arbortext Styler > Document Preview and Publishing > Arbortext Advanced Print Publisher in Arbortext Styler > Managing APP in your Arbortext Styler Environment
  
Managing APP in your Arbortext Styler Environment
The APP print engine and associated support files are built into the Arbortext Styler install tree. The installation of a full Arbortext Editor with Styler environment will include as a default a subset of the Unicode version of Arbortext Advanced Print Publisher — Desktop, providing the APP print engine and the capability to generate APP source code for a Arbortext Styler stylesheet. Note that no APP interface is included. Further information regarding the installation of APP is given in the list below:
1. A prerequisite for a successful APP / Arbortext Styler integration is the availability of an applicable version of Perl. The Perl library perl58.dll is packaged with a Arbortext installation that includes APP, in the location Arbortext-path/app/perl/bin (or Arbortext-path/app/perl64/bin if you are working with a 64-bit installation). If you wish to specify the location of an alternative Perl installation to support APP, set the environment variable APTAPPPERL as required (see APTAPPPERL for further information)
2. APP files are built into the app directory of your Arbortext Styler install tree, in the location Arbortext-path/app. The directory contains the required DLL, system, and library files to run APP from within Arbortext Styler. Note that the inclusion of an integrated APP version with Arbortext Styler will not affect any standalone Arbortext Advanced Print Publisher installation that currently exists on your system.
3. APP files are not installed if you elect to install Arbortext Editor alone.