Datasheet in PDF form, about 123 KB, for the PG320200ARF-XNN-A display module. The 320200 code most likely means a 320 x 200 dot graphic LCD, distinct from the 320 x 240 parts in the same naming family, with A probably marking a revision. Contents usually include pin description, electrical ratings, timing and a mechanical drawing. Use it to confirm connector pinout and drive voltages, and do not swap in a 320240 panel without checking resolution and dimensions.
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.