## Function: COMMON-LISP:MAKE-DISPATCH-MACRO-CHARACTER
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> Cause CHAR to become a dispatching macro character in readtable (which
> defaults to the current readtable). If NON-TERMINATING-P, the char will
> be non-terminating.

### Lambda list
```cl
(char &optional sb-impl::non-terminating-p sb-impl::rt)
```