Originally Posted by
readywhenyouare
You should visit the Delta Museum. They have an entire display dedicated to Deltamatic. Some experienced agents still use the command prompt.
I have been there many times, and have worked on identical systems. The "command prompt" or "green screen" entries are supported by the zTPF mainframe environment (only). In some of the past calamities, only the Deltamatic system was running when external systems failed, and operations was able to continue in cases where older agents knew how it use that system directly. My point was simply that Deltamatic and the OSS (Operations Support Systems) systems are NOT MS-DOS based systems, but rather they are highly specialized mainframe environments.