# Aura Editions
Aura has three editions, NEAT, EXT and OPEN. The default edition is NEAT. EXT and OPEN editions require a license.
# Comparison of editions
| Feature | NEAT | EXT | OPEN |
|---|---|---|---|
| Slicing settings | Basic (slicing panel only) | Extended | Full |
| Predefined settings | For Smooth PA, CFC PA | Full set of AP settings | Full set of AP settings |
| User-created settings | – | – | + |
| Settings export and import | – | – | + |
| Opening Aura projects | Only with NEAT settings | Only with NEAT/EXT settings | Any |
| Import of legacy projects (.auproj) | – | – | + |
# Premium features
A premium license can be combined with any Aura edition (NEAT, EXT, or OPEN). Premium features include masks, support blockers and enforcers, and CLI (CLI is available for Aura.OPEN only). If you want to upgrade your license to a Premium license, please contact your distributor.
# Legacy licenses
If you've purchased Composer A4 or Composer A3 3D printers before the release of Aura 2.0 (Nov 2020), you are eligible for a Legacy Aura license, equivalent to an OPEN license. Please contact your distributor to obtain the Legacy license.