Boardview layout for Wistron-designed mainboard 18848-1, used in the Acer Swift 3 SF314-41 according to related files, packed as a small 113 KB ZIP. The GR token is not explained in the name. Boardview software such as OpenBoardView or FlexBV shows component placement, pin nets and test points on both sides of the PCB, which speeds up locating a shorted capacitor or missing rail. Pair it with the matching schematic and confirm the board number on the PCB first.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @vinafix_bios. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip