They exist in only one form. They exist in various electronic or printed editions.
Important information is the words and the structure.
Printed Text Printing adds to written culture multiplicity and fixity. It creates a record that many others can read from distant space or time. It preserves text, so that scholars need no longer be occupied with reproducing and preserving information in fragile manuscripts. Effect on western culture and scholarly criticism. From being passive custodians of texts, scholars adopted critical attitude towards texts.