computer algebra system output

[paolo m.]

I would like the output of computer algebra systems (cas) not to replace 
input command. Input command could be preserved in math mode, while cas 
output would be displayed as graphic preview.
E.g. 
Entered text:

Equation  [x+1=0]  yields [[ solve(x+1=0,x) ]]

with [] to mark math mode and [[]] to mark math mode input to Maxima cas, 
would be rendered as

Equation x+1=0 yields x=-1

Any comments?

thank you

Paolo M.