MRC:
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.SUPP
Supplementary Features:
Unique 3 bus multi-level mix/effects sys; 8video i/p, plus blk & color background; program & preset buses for background transition; video key bus for luminance keying, chroma keying & pattern inserts; look ahead preview system; desk top model; single conductor control cable; power ranges from 100 to 240 volts, 50 to 60 hz