same usual meaning.
@xref{Translation Keymaps}, for mechanisms that translate event sequences
-at the level of @code{read-key-sequence}.
+at the level of @code{read-key-sequence}. If you need to translate
+input events that are not characters (i.e., @code{characterp} returns
+@code{nil} for them), you must use the event translation mechanism
+described there.
@node Invoking the Input Method
@subsection Invoking the Input Method