-.TH IMAGEX "1" "January 2013" "imagex (wimlib) wimlib @VERSION@" "User Commands"
+.TH IMAGEX "1" "March 2013" "imagex (wimlib) wimlib @VERSION@" "User Commands"
.SH NAME
imagex-optimize \- Optimize a WIM archive
When reading \fIWIMFILE\fR, verify its integrity if the integrity table is
present; in addition, include an integrity table in the optimized WIM. If this
option is not specified, no integrity table is included in the optimized WIM,
-even if there was one before.
+even if there was one in the original WIM.
.TP 6
\fB--recompress\fR
Recompress all compressed streams in \fIWIMFILE\fR when rebuilding it. This
-will increase the time needed to rebuild the WIM,unless the WIM is uncompressed,
-but it may result in a better compression ratio if wimlib can do a better job
-than the program that wrote the original file. A side effect of this is that
-every stream in the original WIM will be checksummed, so this can help verify
-that the WIM is intact (equivalent to applying all the images from it).
+will increase the time needed to rebuild the WIM, unless the WIM is
+uncompressed, but it may result in a better compression ratio if wimlib can do a
+better job than the program that wrote the original file. A side effect of this
+is that every stream in the original WIM will be checksummed, so this can help
+verify that the WIM is intact (equivalent to applying all the images from it).
+
+Note: as mentioned in the README, wimlib generally provides a slightly better
+XPRESS compression ratio than Microsoft's software, while it generally provides
+a slightly worse LZX compression ratio than Microsoft's software. So, you may
+not want to specify \fB--recompress\fR when optimizing a LZX-compressed WIM
+created on Windows.
.SH NOTES
git://wimlib.net / wimlib / blobdiff