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 _dtd Namespace
  
The _dtd Namespace
The _dtd namespace holds JavaScript function tags (.Jf) for each of the elements and processing instructions that can be inserted as touchup commands in Arbortext Editor, for example cellfont and newline.
PTC Arbortext Research and Development (R&D) manages these tags. They should not be changed in the template.