I have not yet successfully traced the substitutions of the power
operator, but why do you need it?

   +:`(gfy 5 10 20)@.0 1
10 20 40

We find that rather than making a train from the agenda j actually makes
and evaluates a phrase.

> Date: Thu, 24 Jan 2013 18:29:36 -0500
> From: "Dan Bron" <[email protected]>
> To: <[email protected]>
> Subject: Re: [Jprogramming] applying >1 gerunds to a set of items
> Message-ID: <000401cdfa8a$ac796480$056c2d80$@us>
> Content-Type: text/plain;       charset="us-ascii"
> 
> Oh boy, forget about sneaky: I just had idea that's outright devious.
> 
> This couldn't possibly work, could it?
> 
>            gfy =: (":noun) <@,&< ]  NB.  gerundify a noun
>         
>            +:`(gfy 5 10 20) ]^:(1:`(<'@.')) 0 1
>         10 20 40


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