The early codex did not look much like the books of today, but as with most other inventions, it was developed and modified according to the needs and preferences of those who used it.
Varajased koodeksid ei näinud küll eriti praegusaegsete raamatute moodi välja, ent nii nagu paljude muudegi leiutistega, muudeti ja arendati ka koodeksit vastavalt kasutajate vajadustele ja soovidele.