Various aspects of Adobe's Extension Levels published after 2006 were accepted into working drafts of ISO 32000-2 (PDF 2.0), but developers are cautioned that Adobe's Extensions are not part of the PDF standard.
2006和发布的各个方面的Adobe的扩展层被采纳为ISO 32000-2（PDF 2.0）的工作草案，但开发者注意到Adobe的扩展不是PDF标准的一部分。