@item (speed @var{n})
Specify the value of @code{native-comp-speed} in effect for native
compilation of this function (@pxref{Native-Compilation Variables}).
-This allows function-level control on the optimization level used for
+This allows function-level control of the optimization level used for
native code emitted for the function. In particular, if @var{n} is
@minus{}1, native compilation of the function will emit bytecode
instead of native code for the function.