This article is aimed to present a rough interpretation of the .spt file format used in NWN2 (there are also alternate versions of this format) and provide some insight into creating custom trees based on existing files. Unfortunately I lack a full interpretation of the format and as such the creation of a completely new tree is (currently) impossible. If you have any information regarding this topic, be it to expand or correct anything written below I strongly encourage you to share this knowledge for the good of the community. MSpytkowski 18:59, 6 March 2009 (UTC)