PG9732 family datasheet, revision B, a small 58.5 KB PDF. The code most likely marks a 97 by 32 dot monochrome graphic LCD module, and this sheet covers the common series data instead of one ordering variant. Inside are typically pin descriptions, absolute ratings, power requirements and timing. It is a quick reference when checking whether a panel receives correct supply and control signals. Compare with the other revision letters in the set and match the module marking before relying on specific values.
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 @acodis_lcd_datasheets_EDID. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.