lispdoc - results for ignore-errors

(ignore-errors &rest forms)
Function: Execute FORMS handling ERROR conditions, returning the result of the last form, or (VALUES NIL the-ERROR-that-was-caught) if an ERROR was handled.
Example:
(defun base64->obj (string)
  (ignore-errors
   (with-safe-io-syntax
    (read-from-string (base64-decode string)))))
Mentioned in:
CLtL2 - 12.5.3. Branch Cuts, Principal Values, and Boundary Conditions in the Complex Plane
CLtL2 - 29.3.12. Serious Conditions
CLtL2 - 29.3.15. Signaling Conditions
CLtL2 - 29.3.2. Trapping Errors
CLtL2 - 29.3.9. Comparison of Restarts and Catch/Throw
CLtL2 - 29.4.4. Handling Conditions
HyperSpec - Macro IGNORE-ERRORS
PCL - testing a files existence
Successful Lisp - assert