A 192 KB PDF datasheet describing the PG12864LRU-FTA-H graphic display, part of the 128 by 64 dot PG12864 range. The full suffix defines the exact configuration, which the document should explain in its ordering information section. Technicians use such sheets to identify connector pins, set the correct contrast and logic supply, check backlight requirements and compare outline dimensions when hunting for an equivalent. Any substitute should match the whole code, not just the base number, to avoid pinout or voltage differences.
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.