XPRESS with 4096 byte chunks).
.TP
\fB--unsafe-compact\fR
-See the documentation for this option in \fBwimlib-imagex-optimize\fR (1).
+Compact the WIM archive in-place and append any new data, eliminating "holes".
+In general, this option should \fInot\fR be used because a failed or interrupted
+compaction will corrupt the WIM archive. For more information, see the
+documentation for this option in \fBwimlib-imagex-optimize\fR (1).
.SH SPLIT WIMS
You may use \fBwimlib-imagex export\fR to export images from a split WIM.
The \fISRC_WIMFILE\fR argument must specify the first part of the split WIM,