Boo Hoo and more class

it's worth while to observere - some boo's and hoo's

 include oof.fs
object class bii
method bii
class;

bii class boo
method boo
how:
: bii cr s" bii " type cr ;
: boo cr s" boo " type cr ;
: init cr s" loading boo " type cr ;
class;

boo class boo-hoo
method boo-hoo
how:
: boo-hoo cr s" boo-hoo " type cr ;
: boo cr s" boo-hooo boo " type cr ;
: init cr s" loading boo-hoo " type cr ;
class;