A few of the earliest MIDI 2.0 devices implemented MIDI Capability Inquiry (MIDI-CI) specification version 1.1. Some features defined in this v1.1 have been deprecated or changed. The later MIDI-CI v1.2 establishes rules for backward and forward compatibility between versions of MIDI-CI. Those rules were not defined in v1.1. Those devices which implement v1.2 or higher may need to also understand MIDI-CI v1.1 for legacy compatibility. So this version 1.1 file is provided for developers to consider backward compatibility.