lispdoc - results for macroexpand-1

(macroexpand-1 form &optional env)
Function: If form is a macro (or symbol macro), expand it once. Return two values, the expanded form and a T-or-NIL flag indicating whether the form was, in fact, a macro. ENV is the lexical environment to expand in, which defaults to the null environment.
 Mentioned in:
CLtL2 - 5.1.3. Special Forms
CLtL2 - 7.2. Generalized Variables
CLtL2 - 7.5. Establishing New Variable Bindings
CLtL2 - 8.1. Macro Definition
CLtL2 - 8.2. Macro Expansion
CLtL2 - 8.4. Compiler Macros
HyperSpec - Function MACROEXPAND, MACROEXPAND-1
On Lisp - Testing Macroexpansion
PCL - generating the expansion
PCL - plugging the leaks
PCL - removing duplication and winning big