lispdoc - results for define-modify-macro

(define-modify-macro name lambda-list function &optional doc-string)
Function: Creates a new read-modify-write macro like PUSH or INCF.
 Mentioned in:
CLtL2 - 25.1.3. Compilation Environment
CLtL2 - 5.3.1. Defining Named Functions
CLtL2 - 7.2. Generalized Variables
HyperSpec - 3.4.9 Define-modify-macro Lambda Lists
HyperSpec - Macro DEFINE-MODIFY-MACRO