1.8.2 AppInfo Platform Qualifiers
AppInfo platform qualifiers SHOULD be defined by each vendor that implements any of the following protocols:
The Session Factory protocol
The Launch App protocol
The Launch Compatible App protocol
A vendor SHOULD define its qualifier based on a domain name, like "fabrikam.com", which is owned by the vendor, to ensure that no other vendor uses the same value. The platform qualifier is specified by an AppInfo structure (section 2.2.2).