recovering old .sav files: thanks and further question

Robert Dodier ha scritto:
> There are 2 problems here, one is that the save function stores
> a lot of stuff which is built-in (and therefore need not be saved),
> and the other is that the implementation of strings was changed.
> To load this file, either cut off all the stuff beginning here:
> 
>>  (ADD2LNC '$NSET $PROPS)
> 
> That is slightly risky since the order of items in the file isn't guaranteed.
> 
> Or change these symbols to strings:
> 
>>  (DEFINE-SYMBOL '&{)
> Replace with (DEFINE-SYMBOL "{")
> 
>>  (DEFINE-SYMBOL '&})
> Replace with (DEFINE-SYMBOL "}")
> 
> Sorry for the trouble. File saving and restoring needs some work.
> Thanks for bringing this problem to our attention.
> 
> Robert Dodier
> 

Dear Robert,
thank you very much: I tried both ways you suggested and both worked.
After some editing I can now load my old .sav files.
Then I use playback() to see what I actually loaded.
However the content of my file are just printed on screen, and I cannot 
use them to do further calculations (as I can do with .wxm files).
Any way of going around this?

Thanks,
Alberto
-- 
Alberto Marcone                       alberto.marcone at dimi.uniud.it
Dip. di Matematica e Informatica
Universita' di Udine                  tel: +39-0432-558482
via delle Scienze 206                 fax: +39-0432-558499
33100 Udine
Italy                                 http://www.dimi.uniud.it/marcone/