Function: _(_)
Section: symbolic_operators
Help: f(a,b,...): evaluate the function f on a,b,...
Description:
(gen):gen closure_callgenall($1, 0)
(gen,gen):gen closure_callgen1($1, $2)
(gen,gen,gen):gen closure_callgen2($1, $2, $3)
(gen,gen,...):gen closure_callgenall($1, ${nbarg 1 sub}, $3)