Thanks for posting this useful information. Could you share it's source and please provide some context to help others searching etc? As a moderator, I'm trying to ensure that the forum posts are used more for questions and discussions. If this information is available elsewhere on PDN, it should be searchable and therefore not replicated here, however I appreciate your desire here is to help others, so I'm wondering did you post it as you have had difficulty finding it elsewhere? If so maybe we can improve visibility of content like this and improve PDN.