@@ -714,6 +714,11 @@ Change the syncpoint usage in nut:

 @table @option

 @item @var{default} use the normal low-overhead seeking aids.

 @item @var{none} do not use the syncpoints at all, reducing the overhead but making the stream non-seekable;

+    Use of this option is not recommanded, as the resulting files are very damage

+    sensitive and seeking is not possible. Also in general the overhead from

+    syncpoints is negligible. Note, -@code{write_index} 0 can be used to disable

+    all growing data tables, allowing to mux endless streams with limited memory

+    and wihout these disadvantages.

 @item @var{timestamped} extend the syncpoint with a wallclock field.

 @end table

 The @var{none} and @var{timestamped} flags are experimental.