diff --git a/xorriso/opts_d_h.c b/xorriso/opts_d_h.c
index 87425fdc..e4aca4ff 100644
--- a/xorriso/opts_d_h.c
+++ b/xorriso/opts_d_h.c
@@ -1,7 +1,7 @@
 
 /* xorriso - creates, loads, manipulates and burns ISO 9660 filesystem images.
 
-   Copyright 2007-2022 Thomas Schmitt, <scdbackup@gmx.net>
+   Copyright 2007-2023 Thomas Schmitt, <scdbackup@gmx.net>
 
    Provided under GPL version 2 or later.
 
@@ -2042,6 +2042,10 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "  -toc_of \"in\"|\"out\"|\"all\"[\":short\"]",
 "                 Show -toc of either input drive or output drive or both.",
 "",
+"  -assess_indev_features \"plain\"|\"cmd\"|\"as_mkisofs\"|\"replay\"",
+"                 Inspect the filesystem on -indev for features like ISO level,",
+"                 Rock Ridge, or file name relaxations.",
+"",
 "  -mount_cmd drive entity id path",
 "                 Print to result channel a command suitable to mount the",
 "                 depicted entity (see -load) at the given directory path.",
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index c9363caf..f8480a8d 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2023.01.22.152155"
+#define Xorriso_timestamP "2023.02.08.200727"