+.SH LEGACY COMPATIBILITY OPTIONS
+.TP
+\fBWARNING:\fR
+Do not use these options until you need compatibility with specific old kernel.
+.TP
+.B "\-\-integrity\-legacy\-padding"
+Use inefficient legacy padding.
+.TP
+.B "\-\-integrity\-legacy\-hmac"
+Use old flawed HMAC calclation (also does not protect superblock).
+.TP
+.B "\-\-integrity\-legacy\-recalculate"
+Allow insecure recalculating of volumes with HMAC keys (recalcualtion offset in superblock
+is not protected).
+