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I have just added support for function literals. I'll be brief, because now I'm tired.

The literal operator returns a function literal or an array literal, depending on whether it receives a function name or an array.

The setfn command sets the named function to the value of an expression. To copy a function, you can set a new function to the literal of an already defined function. For example:

def ff - #0 #1;
setfn qq literal ff;

This also works:

def ff - #0 #1;
set dd literal ff;
eval def qq #dd;

You can copy functions even faster without the intermediary of function literals:

copyfn ff qq;

With function literals, you can write code that creates its own functions. This may be useful for writing more generalized code, which can be used with more games, or for games whose rules change according to new conditions.