-
-Unless \fB--rebuild\fR is specified, aborting an \fBimagex export\fR command
-mid-way through has a small chance of corrupting the destination WIM file.
-However, a precaution is taken against this, so it should be very unlikely. In
-the event of an aborted \fBimagex export\fR, \fBimagex optimize\fR can be run to
-remove extra data that may have been partially appended to the physical
-destination WIM file but not yet incorporated into the structure of the WIM.
-
+It is safe to abort an \fB@IMAGEX_PROGNAME@ export\fR command partway through;
+however, after doing this, it is recommended to run \fB@IMAGEX_PROGNAME@
+optimize\fR on the destination WIM to remove any data that was appended to the
+physical WIM file but not yet incorporated into the structure of the WIM, unless
+the WIM was being rebuild (e.g. with \fB--rebuild\fR), in which case you should
+delete the temporary file left over.
+.PP
+Since the WIM format uses single-instancing (streams are content-addressed by
+SHA1 message digests), when an image is exported, only the streams not already
+present in the destination WIM need to be copied. However, a new copy of the
+image's metadata resource always needs to be created.
+.PP