- * If changes are committed from a read-write mount, the progress function will
- * receive ::WIMLIB_PROGRESS_MSG_WRITE_STREAMS messages.
+ * The progress function will receive a ::WIMLIB_PROGRESS_MSG_UNMOUNT_BEGIN
+ * message. In addition, if changes are committed from a read-write mount, the
+ * progress function will receive ::WIMLIB_PROGRESS_MSG_WRITE_STREAMS messages.