Another angle: "Xtm" could be part of a typo, like STM (something) but XTM is also used in other contexts, like XMind Topic Maps. But the rest of the string doesn't fit. Hmm.
Another angle: "Xtm" could be part of a typo, like STM (something) but XTM is also used in other contexts, like XMind Topic Maps. But the rest of the string doesn't fit. Hmm.