Licensed per Core. A Core means a physical or virtual processor within a computer’s central processing unit (CPU) that receives and executes commands. For a physical computer with a multi-processor CPU, the number of Cores is equal to the number of physical processors in the CPU.
To use Oxygen Scripting functions from an automated command-line script you must have an all-platform installation of Oxygen XML Editor.

Support and Maintenance
The one year Support and Maintenance Pack includes, unlimited technical support, all new releases, major and minor for one year. When you renew you must do so for all licenses and within 14 days of the expiry of your previous Maintenance Pack.