however, this may still be overridden through the \fB--config\fR parameter.
.TP
\fB--unsafe-compact\fR
-See the documentation for this option in \fBwimlib-imagex-optimize\fR (1).
+For \fBwimlib-imagex append\fR: 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).
.TP
\fB--snapshot\fR
Create a temporary filesystem snapshot of the source directory and capture the
has had images soft-deleted from it.
.TP
\fB--unsafe-compact\fR
-See the documentation for this option in \fBwimlib-imagex-optimize\fR (1).
+Compact the WIM archive in-place, 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 EXAMPLES
Delete the first image from 'boot.wim':
.RS
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,
\fBwimlib-imagex apply\fR (1) for more information.
.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 NOTES
\fBwimlib-imagex update\fR is partly redundant with \fBwimlib-imagex
mountrw\fR, since if a WIM image can be mounted read-write, then there