-\fITYPE\fR may be "none",
-"maximum", or "fast". By default, the compression type is "none". If \fB--compress\fR
-is specified but \fITYPE\fR is not, the compression type is taken to be
-"maximum", which is LZX compression. "fast" compression is XPRESS compression.
+You may also specify the actual names of the compression algorithms, "XPRESS"
+and "LZX", instead of "fast" and "maximum", respectively.
+
+.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.
+
+.SH SPLIT WIMS
+
+You may use \fBimagex 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).
+
+Here's an example. The names for the split WIMs usually go something like:
+
+.RS
+.PP
+.nf
+mywim.swm
+mywim2.swm
+mywim3.swm
+mywim4.swm
+mywim5.swm
+\. ... etc.
+.RE
+
+To export the first image of this split WIM to a new or existing WIM file
+"other.wim", run:
+.PP
+.RS
+imagex export mywim.swm 1 other.wim --ref="mywim*.swm"
+.RE
+.PP