-/* Starting in Windows 8, WIMGAPI can create WIMs using LZMS compression, and
- * this flag is set on such WIMs. However, an additional undocumented flag
- * needs to be provided to WIMCreateFile() to create such WIMs, and the version
- * number in the header of the resulting WIMs is different (3584). None of this
- * is actually documented, and wimlib does not yet support this compression
- * format. */
+/* Resources in the WIM with WIM_RESHDR_FLAG_COMPRESSED set in their headers are
+ * compressed with LZMS compression. Note: this flag is only valid if the WIM
+ * version is WIM_VERSION_PACKED_STREAMS. Also, this flag is only supported in
+ * wimlib v1.6.0 and later and WIMGAPI Windows 8 and later. */