Additional reasons why commands are undocumented: (a) The feature is either untested or insufficiently tested due to time constraints, (b) The feature has been tested but did not pass sufficiently to warrant release, (c) KEYOPTs, program options, etc. Others are 'old' legacy commands which became undocumented in subsequent versions of ANSYS. Some of these commands are present in later versions of ANSYS (e.g., ANSYS 5.6, 5.7). John Crawford and John Swanson's contributions), and the author's own findings. Undocumented commands are collected from ASD websites, ANSYS, Inc., and XANSYS mailing List (esp. Undocumented commands & features are not guaranteed or supported by ANSYS or the ASDs (they also do not have error reports associated with them), but they are sometimes quite useful.
