Home › Forums › Life › PTS This topic has 0 replies, 1 voice, and was last updated 3 years, 6 months ago by Philip Bieluch. Viewing 1 post (of 1 total) Author Posts June 11, 2021 at 6:56 pm #4903 Philip BieluchParticipant What were the file extensions used by PTS, the old software system by Chalke Inc? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Log in / Register