Analysis of information sources in references of the Wikipedia article "VISCII" in English language version.
VISCII and armscii-8 are special in the sense that, for long time, Thunderbird itself (misguidedly) provided these encodings in the user interface for the choice of outgoing character encoding when composing a message. Therefore, it is possible that there exists a Thunderbird-created legacy of VISCII and armscii-8 email and Usenet posts.
