Cannot locate anywhere file My_First_Score.mscx considered the default "blank" score

Ok, so it could be a suggestion for future improvement to include a "real" file such as the initial empty score inside the default "score" folder.

In some cases, for example when accidentally closing the main score, it is hard to come back to the same kind of clean empty score: even using the wizard template "Treble clef", we cannot exactly get back to that simple score shown at the beginning (not having the system breaks every four bars).

By the way, the miniature appearing inside the wizard panel while selecting a template, never corresponds to the appearance of the score once it is created. This could result somehow frustrating.

As example, check the "Treable Clef" or "Bass clef" templates: in the miniature of the wizard the empty bars look well spread to occupy the whole page, but once the real score is created, it has all the empty bars "condensed" at the beginning of the page, since there are no system breaks.