core + attic (Attic Area): these terms have been either depricated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

softwareAddOn

Canonical URL: http://schema.org/softwareAddOn

Thing > Property > softwareAddOn

Additional content for a software application.

Usage: Fewer than 10 domains
Values expected to be one of these types
SoftwareApplication
Used on these types
SoftwareApplication

Schema Version 3.2