PTC ALD in Arbortext Styler > Integration of PTC Arbortext Layout Developer in Arbortext Styler > Arbortext Styler Components in PTC ALD Templates Generated from a .style Stylesheet > The _app Namespace
  
The _app Namespace
The _app namespace contains all the PTC Arbortext Layout Developer functions required to make other features work. This includes CALS and custom table tags. These tags are called from the code generated in the stylesheet0 namespace.
PTC Arbortext Research and Development (R&D) manages these tags. They should not be changed in the template.