@cindex changing file time (in Dired)
@item T @var{timestamp} @key{RET}
Touch the specified files (@code{dired-do-touch}). This means
-updating their modification times to @var{timestamp}. This is like
-the shell command @code{touch}.
+updating their modification times to @var{timestamp}, which defaults
+to the present time. This is like the shell command @command{touch}.
@findex dired-do-print
@kindex P @r{(Dired)}