ALGOL’s mission in life was to describe algorithms. Pure ALGOL has no input/output statements. Its reserved words were in bold font - try that on your keypunch! :-) It was never meant to be compiled and run.
One of the Junior year projects was to write a compiler in ALGOL, generating MIX code (Ref. Donald Knuth). After getting the punch card output back we ran it through the MIX interpreter to assess the results.