This question already came to my mind, and hit me again during this:
https://groups.google.com/d/msg/ats-lang-users/FBpwBBK-q5A/EPGVp7elUK4J
Sometime I feel some predefined ATS declarations interfere with what I try
to do. Here, a file_mode popped‑up when I was far from expecting this to
appear in the place.
Is there a minimal inclusions and staloads set which would be enough to
work with ATS, while avoiding this kind of interference?