Roger Hui wrote:
> 
> [...]
> There are some arguments against hook itself.  See:
> http://www.jsoftware.com/jwiki/Essays/Hook%20Conjunction%3F
> 
That is an interesting link.

It should be noted that it's also possible to define conjunction 
representing fork, using explicit conjuction/tacit adverb hybrid 
definition:

    F =: 2 : '`u(`v)(`:6)'

Examples:

   f g F h
f g h
   f g F h u F v
(f g h) u v
   u f g F h F v
u (f g h) v
   w f g F h u F v
w ((f g h) u v)

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