lispdoc - results for get-dispatch-macro-character

(get-dispatch-macro-character disp-char sub-char &optional
 (rt-designator *readtable*))
Function: Return the macro character function for SUB-CHAR under DISP-CHAR or NIL if there is no associated function.
 Mentioned in:
CLtL2 - 22.1.5. The Readtable
HyperSpec - Function SET-DISPATCH-MACRO-CHARACTER, GET-DISPATCH-MACRO-CHARACTER