-file, a colon, and the image; for example, "--update-of mywim.wim:1".
-However, the WIM file may be omitted, in which case it will default to the WIM
-file being appended to for append operations, or the WIM file from which a delta
-is being taken (with \fB--delta-from\fR, if specified) for capture operations.
+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.