Canonum De Ius Positivum
Canons of Positive Law
II. Form
2.2 Form Creation and Change
Article 56 - Extraction
Canon 1734 (link)
An extract may never be correctly called a copy. The word copy implies a faithful duplication of the original. However, an extract is not dependent on an accurate depiction of the original, only a summary or contrivance, which implies an extract may not resemble the original accurately.