Komentarz redakcyjny może wyjaśniać skrót, lecz powinien pozostawać wizualnie odrębny od zapisu widocznego na skanie.

The marginal note belongs to this copy and should not disappear merely because it complicates automatic cropping.

Let us mark the word as illegible rather than insert a guess into the facsimile that looks like part of the original text.

A missing page needs a clear marker in the sequence so the reader does not mistake the jump in numbering for a file error.

The publication date does not establish the date of the handwritten additions, so let us not automatically assign both layers to the same period.

The size of the furniture in the model can be compared with the room only after establishing whether both were made at the same scale.

The transparent wall here serves to reveal the interior, so let us not automatically read it as a proposal to use glass in the building.

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but