Catalogued among schematics, this 110 KB PDF is named for the 2N5060 and is most likely the manufacturer datasheet for that JEDEC-numbered semiconductor. The name states nothing about the source or edition. It is opened in a normal PDF reader to check terminal identification, maximum ratings and trigger or switching characteristics before replacing the device. Compare the package outline and markings with the component you have, since pinouts are not universal across makers.
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 @cyberlanelectonik. 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.