Regarding the serial number, Adobe Flash Professional CS6 requires a valid serial number for activation and use. If you're looking for a serial number, I recommend checking the following options:
If you previously purchased or registered the software, you can retrieve the 24-digit numeric code through these official channels: Adobe Account : Sign in to and navigate to View your products adobe flash professional cs6 serial number
This tool allows you to automatically export symbols and animation sequences from your library or stage into a single, optimized bitmap image known as a sprite sheet (or texture atlas). How it works: Regarding the serial number, Adobe Flash Professional CS6