lispdoc - results for symbol-function

(symbol-function symbol)
Function: Return SYMBOL's current function definition. Settable with SETF.
(defun safe-symbol-function (sym)
  "If the symbol has a bound function,
   return the bound function, otherwise nil."
  (if (and sym (fboundp sym))
      (symbol-function sym)
Mentioned in:
CLtL2 - 10. Symbols
CLtL2 - 2.13. Functions
CLtL2 - 25.1. The Compiler
CLtL2 - 25.1.2. Compiled Functions
CLtL2 - 28.2. Functions in the Programmer Interface
CLtL2 - 4.8. Type Conversion Function
CLtL2 - 5.3.3. Control of Time of Evaluation
CLtL2 - 7.1. Reference
HyperSpec - Accessor SYMBOL-FUNCTION
On Lisp - Applications for Macros
On Lisp - Chapter _28
On Lisp - Recursion on Cdrs (Macros Returning Functions)