The 16 parameter values for this effect block (14-bit wide params, 7-bit single-byte params).
The channel routed through the insertion effect, 0-based.
127 or a value that's above the current channel count means OFF.
The type of the processor. Per XG spec, BASIC EFFECT (LSB = 0) will be used if the exact match is missing. If both are missing, fallback will be used. The newly selected processor is reset to its type defaults, mirroring the GS insertion behavior.
A snapshot of a XGInsertionBlock.