.BR "No action"
If no action is specified, the action is to merge in the specified
packages, satisfying any dependencies that they may have. The
-arguments can be \fIebuilds\fR, \fItbz2s\fR, \fIsets\fR, or
-\fIatoms\fR. \fBNote that you need to use the \-\-usepkg
+arguments can be \fIatoms\fR, \fIsets\fR, installed \fIfiles\fR,
+\fIebuilds\fR, or \fItbz2s\fR.
+\fBNote that you need to use the \-\-usepkg
option if you want to install a tbz2\fR. The packages are added
to the \fBworld\fR file at the end, so that they are considered for
later updating.