method for writing element node data.
method for writing element node data.

Still no interpolation scheme, but maybe we do not need our own.

BubuLK/sfepy,vlukes/sfepy,BubuLK/sfepy,vlukes/sfepy,rc/sfepy,sfepy/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,sfepy/sfepy,sfepy/sfepy,BubuLK/sfepy