Issue: PATHNAME-SYMBOL (Version 4)

[David A. Moon <Moon@STONY-BROOK.SCRC.Symbolics.COM>]

Typo:
  Reiterate that OPEN, WITH-OPEN-FILE, LOAD, COMPILE-FILE, RENAME-FILE,
  DELETE-FILE, FILE-WRITE-DATE, FILE-AUTHOR do not allow symbols for their
  file or filename argument, and that DIRECTORY does not allow a symbol
  for its pathname argument. This is implied by the respective
  descriptions of those functions in CLtL, but as explicitly stated.
The word "as" in the last line is probably supposed to be "not".

Otherwise this looks fine.