\fBwimappend\fR (equivalently: \fBwimlib-imagex append\fR) commands create
("capture") a new Windows Imaging (WIM) image. \fBwimcapture\fR creates a new
WIM archive \fIWIMFILE\fR to contain the new image, while \fBwimappend\fR adds
-the image to the existing WIM archive \fIWIMFILE\fR.
+the image to the existing WIM archive \fIWIMFILE\fR (or with \fB--create\fR,
+creating it if needed).
.PP
\fISOURCE\fR specifies the location of the files from which to create the WIM
image. If \fISOURCE\fR is a directory or a symbolic link pointing to a
successfully created, \fBwimlib-imagex\fR must be run as an Administrator, and
it cannot be run in WoW64 mode (i.e. if Windows is 64-bit, then
\fBwimlib-imagex\fR must be 64-bit as well).
+.TP
+\fB--create\fR
+With \fBwimappend\fR, if the WIM file doesn't exist yet, then create it (like
+\fBwimcapture\fR).
.SH NOTES
\fBwimappend\fR does not support appending an image to a split WIM.
.PP