If `-m <msg>` or `-F <file>` is given and `-a`, `-s`, and `-u <keyid>`
are absent, `-a` is implied.
-Otherwise just a tag reference for the SHA-1 object name of the commit object is
-created (i.e. a lightweight tag).
+Otherwise, a tag reference that points directly at the given object
+(i.e., a lightweight tag) is created.
A GnuPG signed tag object will be created when `-s` or `-u
<keyid>` is used. When `-u <keyid>` is not used, the