+.IP ""
+The NTFS volume capture mode on UNIX-like systems cannot be used with
+\fB--source-list\fR, as only capturing a full NTFS volume is supported.
+.TP
+\fB--pipable\fR
+Create a "pipable" WIM, which can be applied fully sequentially, including from
+a pipe. An image in the resulting WIM can be applied with \fB@IMAGEX_PROGNAME@
+apply\fR, either normally by specifying the WIM file name, or with
+\fB@IMAGEX_PROGNAME@ apply -\fR to read the WIM from standard input. See
+\fB@IMAGEX_PROGNAME@ apply\fR(1) for more details.
+.IP ""
+For append operations, this option will result in a full rebuild of the WIM to
+make it pipable. For capture operations, the captured WIM is simply created as
+pipable. Beware that the more images you add to a pipable WIM, the less
+efficient piping it will be, since more unneeded data will be sent through the
+pipe.
+.IP ""
+When wimlib creates a pipable WIM, it carefully re-arranges the components of
+the WIM so that they can be read sequentially and also makes several other
+modifications. As a result, these "pipable" WIMs are \fInot compatible with
+Microsoft's software\fR, so keep this in mind if you're going to use them. If
+desired, you can use \fB@IMAGEX_PROGNAME@ optimize --not-pipable\fR to re-write
+a pipable WIM as a regular WIM. (\fB@IMAGEX_PROGNAME@ export\fR also provides
+the capability to export images from a pipable WIM into a non-pipable WIM, or
+vice versa.)
+.IP ""
+For the most part, wimlib operates on pipable WIMs transparently. You can
+modify them, add or delete images, export images, and even create split pipable
+WIMs. The main disadvantages are that appending is (currently) less efficient
+(\fB--rebuild\fR is always implied), and also they aren't compatible with
+Microsoft's software.
+.IP ""
+\fB@IMAGEX_PROGNAME@ capture\fR and \fB@IMAGEX_PROGNAME@ append\fR can both
+write a pipable WIM directly to standard output; this is done automatically if
+\fIWIMFILE\fR is specified as "-". (In that case, \fB--pipable\fR is assumed.)
+.TP
+\fB--not-pipable\fR
+Ensure the resulting WIM is in the normal, non-pipable WIM format. This is the
+default for \fB@IMAGEX_PROGNAME@ capture\fR, except when writing to standard
+output (\fIWIMFILE\fR specified as "-"), and also for \fB@IMAGEX_PROGNAME@
+append\fR, except when appending to a WIM that is already pipable.
+.TP
+\fB--update-of\fR=[\fIWIMFILE\fR:]\fIIMAGE\fR
+Declares that the image being captured or appended from \fISOURCE\fR is mostly the same as
+the existing image \fIIMAGE\fR in \fIWIMFILE\fR, but captured at a later point
+in time, possibly with some modifications in the intervening time. This is
+designed to be used in incremental backups of the same filesystem or directory
+tree. \fIIMAGE\fR can be a 1-based index or name of an existing image in
+\fIWIMFILE\fR. It can also be a negative integer to index backwards into the
+images (e.g. -1 means the last existing image in \fIWIMFILE\fR).
+.IP ""
+When this option is provided, the capture or append of the new image will be
+optimized by not reading files that, based on metadata such as timestamps,
+appear not to have been modified since they were archived in the existing
+\fIIMAGE\fR. Barring manipulation of timestamps, this option only affects
+performance and does not change the resulting WIM image.
+.IP ""
+As shown, the full syntax for the argument to this option is to specify the WIM
+file, a colon, and the image; for example, "--update-of mywim.wim:1". However,
+the WIM file and colon may be omitted, in which case the WIM file will default
+to the WIM file being appended to for append operations, or the WIM file from
+which a delta is being taken (only if \fB--delta-from\fR is specified exactly
+once) for capture operations.
+.TP
+\fB--delta-from\fR=\fIWIMFILE\fR
+For \fB@IMAGEX_PROGNAME@ capture\fR only: capture the new WIM as a "delta" from
+\fIWIMFILE\fR. Any streams that would ordinarily need to be archived in the new
+WIM are omitted if they are already present in the \fIWIMFILE\fR on which the
+delta is being based. The new WIM will still contain a full copy of the image
+metadata, but this is typically only a small fraction of a WIM's total size.
+.IP ""
+This option can be specified multiple times, in which case the resulting delta
+WIM will only contain streams not present in any of the specified base
+\fIWIMFILE\fRs.
+.IP ""
+To operate on the resulting delta WIM using other commands such as
+\fB@IMAGEX_PROGNAME@ apply\fR, you must specify the delta WIM as the WIM file to
+operate on, but also reference the base WIM(s) using the \fB--ref\fR option.
+Beware: to retain the proper functioning of the delta WIM, you can only add, not
+delete, files and images to the base WIM(s) following the capture of a delta
+from it.
+.IP ""
+\fB--delta-from\fR may be combined with \fB--update-of\fR to increase the
+speed of capturing a delta WIM.
+.IP ""
+As an example, consider the following backup and restore sequence:
+.IP ""
+.RS
+.nf
+(initial backup)