Cm4+94v0+boardview [2021] -

This is a specialized file format (often .brd , .bdv , or .fz ) used by technicians. Unlike a flat schematic, a Boardview provides a 3D-like digital map of the physical PCB, showing exactly where every trace, via, and component is located. Why This Combination Matters

If you see printed on your CM4 or a carrier board, it refers to the UL 94 flammability standard: cm4+94v0+boardview