1. Every hyperlink-like element was replaced by `"$1"` (where $1 is the original string showed in the hyperlink);
2. Arrows `--->` were used in lines containing practice examples when no editing text is involved;
3. Context on interactivity was minimally adapted when strictly needed, not to disrupt the original tutor's intent;
4. Tests regarding the tutor file refactored to ensure the new syntax is not flagged as an error.
