=== Texts from written sources ===
The site gives access to diverse published texts, such as entire books (as the [[Alphonse de Candolle, Origine des plantes cultivées. 1882 and 1886.|Origin of cultivated plants]]) or quotations. The principle is to respect litterally the text as it was published. There may subsist errors due to copying or coming from OCR, and corrections are welcome. But they should absolutely be done by checking in the original work. If the author or the publisher has left errors, they must '''not ''' be corrected.
However, in the case of old texts, particular standards can be defined. In French for example, use of i/j or u/v was not the same in past centuries, and it can be decided to adopter adopt modern usage for the sake of a better legibility. Similarly, manuscripts and incunabula often use composed signs to write some terminations ; it is better to avoid such signs.
=== Quotations ===