-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
+applied fully sequentially, including from a pipe. See \fB@IMAGEX_PROGNAME@
+capture\fR(1) for more details about creating pipable WIMs. The default without
+this option is to make \fIDEST_WIMFILE\fR pipable if and only if it already
+existed and was already pipable, or was "-" (standard output).
+.TP
+\fB--not-pipable\fR
+Build, or rebuild, \fIDEST_WIMFILE\fR as a normal, non-pipable WIM. This is the
+default behavior, unless \fIDEST_WIMFILE\fR already existed and was already
+pipable, or if \fIDEST_WIMFILE\fR was "-" (standard output).