
Close connection at halt (any change of at_halt/1 Vitor ?!!).

Investigate why plot_cpu/1 needs so much stack.
Doc entry to the makefile.
Harmonize atom and strings from prolog to R. Both interfaces should be
able to cope with both.
Investigate the x.y notation and see if SWI can cope with it.
Calling functions natively ? 

We could drop the <- operator even, just hook an exception 
   handler for predicates that are not there !!!

catch( what(is,there), All, (write(caught(All)),nl) ).
doesnt; work  ->

defining message/2 and which
