>> How would you propose to assign a value to something like
>> 
>> (a (x1 x2) (y1) (z1 z2))
>> 
>> Isn't assigning a value something you can only do to a symbol in
>> Lisp?

> Currently assignment to scripted symbols is not supported.

I wouldn't even have expected that an assignment of a value to something
of type Symbol is allowed.

s of type Symbol *is* a value. What Bill means/wants is scripted
variable names (or automatic treatment of anything of type Symbol as
variable name (in the sense of the programming language SPAD)).

> In principle we could add support for such symbols to serve as
> Spad/interpreter variable names.

Please no. That would change the SPAD language (if it is ever becoming
formal).

Ralf

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