+Unless --rebuild is specified, aborting an \fBimagex append\fR command mid-way
+through has a small chance of corrupting the WIM file. However, a precaution is
+taken against this, so it should be very unlikely. In the event of an aborted
+\fBimagex append\fR, \fBimagex optimize\fR may be run to remove extra data that
+may have been partially appended to the physical WIM file but not yet
+incorporated into the structure of the WIM.
+