\fB@IMAGEX_PROGNAME@ optimize\fR.
.TP
\fB--ref\fR="\fIGLOB\fR"
-File glob of additional split WIM parts that are part of the split WIM being
-exported. See \fBSPLIT_WIMS\fR.
+File glob of additional WIMs or split WIM parts to reference resources from.
+See \fBSPLIT_WIMS\fR. This option can be specified multiple times. Note:
+\fIGLOB\fR is listed in quotes because it is interpreted by
+\fB@IMAGEX_PROGNAME@\fR and may need to be quoted to protect against shell
+expansion.
.TP
\fB--pipable\fR
Build, or rebuild, \fIDEST_WIMFILE\fR as a "pipable WIM" so that it can be
default behavior, unless \fIDEST_WIMFILE\fR already existed and was already
pipable, or if \fIDEST_WIMFILE\fR was "-" (standard output).
.SH SPLIT WIMS
-You may use \fB@IMAGEX_PROGNAME@ export\fR to export images from a split WIM. The
-\fISRC_WIMFILE\fR argument is used to specify the first part of the split WIM, and
-the \fB--refs\fR="\fIGLOB\fR" option is used to provide a shell-style file glob
-that specifies the additional parts of the split WIM. \fIGLOB\fR is expected to
-be a single string on the command line, so \fIGLOB\fR must be quoted so that it
-is protected against shell expansion. \fIGLOB\fR must expand to all parts of
-the split WIM, except optionally the first part which may either omitted or
-included in the glob (but the first part MUST be specified as \fISRC_WIMFILE\fR as
-well).
-.PP
-Here's an example. The names for the split WIMs usually go something like:
+You may use \fB@IMAGEX_PROGNAME@ export\fR to export images from a split WIM.
+The \fISRC_WIMFILE\fR argument must specify the first part of the split WIM,
+while the additional parts of the split WIM must be specified in one or more
+\fB--ref\fR="\fIGLOB\fR" options. Since globbing is built into the \fB--ref\fR
+option, typically only one \fB--ref\fR option is necessary. For example, the
+names for the split WIM parts usually go something like:
.PP
.RS
.nf