argument, first reset the timer to 0.
@kindex M-@key{RET}
@item M-@key{RET}
-One the timer list is started, you can also use @kbd{M-@key{RET}} to insert
+Once the timer list is started, you can also use @kbd{M-@key{RET}} to insert
new timer items.
@kindex C-c C-x 0
@item C-c C-x 0