Remove all marks that use the character @var{markchar}
(@code{dired-unmark-all-files}). The argument is a single
character---do not use @key{RET} to terminate it. See the description
-of the @kbd{* c} command below, which lets you change the character that
-marks files.
+of the @kbd{* c} command below, which lets you replace one mark
+character with another.
With a numeric argument, this command queries about each marked file,
asking whether to remove its mark. You can answer @kbd{y} meaning yes,
* c D t * c SPC D * c t SPC
@end example
-This assumes that no files are marked with @samp{t}.
+This assumes that no files were already marked with @samp{t}.
@item % m @var{regexp} @key{RET}
@itemx * % @var{regexp} @key{RET}