# Description
PDF/A-3 requires PDF a version <= 1.7 and defines three conformance levels, 
in the following order from less strict to more strict:
- Level B
- Level U
- Level A

It is exactly the same as PDF/A-2, except for clause 6.8.

See `README.md` for the meaning of each subclause.

## Level B

## 6.8 Embedded files

krilla ensures all required fields are written when embedding files. 🟢

## Level U

-

# Level A

-