= Nesting =
A multi-scale nesting system is available since rXXXX. It currently undergoes major testing and revisions. A detailed description will follow after the official release.

== Job preparation ==
The nesting system is activated by specifying a {{{&nestpar}}} NAMELIST in the _p3d file of the root domain, e.g.:
{{{
 &nestpar domain_layouts = 'root domain',      1,  -1,  24,    0.0,    0.0,
                           'child domain 1',   2,   1,  24,  100.0,  100.0,
                           'child domain 2',   3,   1,  24,  200.0,  200.0,
          nesting_datatransfer_mode = 'mixed',
          nesting_mode = 'two-way',
/
}}}