> DECWindows

> /tmp/med_16.sixel

... Is that Sinfest? From before the author went weird? If so, then that's certainly a very different way of feeling old than I expected when clicking the link.

P.S.: There's another in "RiscOS 3.71", and "System V Release 4 Amiga Version 1.1" references Penny Arcade. [0]

[0] https://www.penny-arcade.com/comic/2005/01/05/the-merch#