`print'
-------

print(OBJ [,NL])
     :: OBJ \.

RETURN
     0
OBJ
     C
NL
     tO (C)

   * OBJ ]ĕ\.
   *  2  0 ̏ꍇs, ȊO͉s.
   * ̖̔߂l 0 ł邩, `print();'Ŏs, o͂̌
      0 Ԃ.  `print()$' Ƃ, Ō 0 ͏o͂Ȃ.
   *  OBJ 𓯎ɏo͂ OBJ XgɂƂ悢.

     [8] def cat(L) { while ( L != [] ) { print(car(L),0); L = cdr(L);} print(""); }
     [9] cat([xyz,123,"gahaha"])$
     xyz123gahaha

