## Function: COMMON-LISP:SET-SYNTAX-FROM-CHAR
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> Causes the syntax of TO-CHAR to be the same as FROM-CHAR in the optional
> readtable (defaults to the current readtable). The FROM-TABLE defaults to the
> standard Lisp readtable when NIL.

### Lambda list
```cl
(sb-impl::to-char sb-impl::from-char &optional sb-impl::to-readtable
 sb-impl::from-readtable)
```