Tiny 61-byte plain text note titled eMMC points, with no device, model or board named in the file name. Content this small probably holds only a short reference such as pad names, a link or a brief pinout hint for the eMMC test points used for direct reading or writing of the memory chip. Such points, typically CMD, CLK, DAT0, VCC, VCCQ and ground, are wired to an eMMC programmer box for ISP access. Open it in any text editor and confirm which device it belongs to before soldering wires.
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 @datasheets1. Enginerys does not host this file.