RE: Rational functions equal almost everywhere, but not for "subst"

[Jacques Gélinas <jacquesg00@hotmail.com>]

Thanks for the very detailed explanations for the parameter and 
global variable link difference between 2.4.1 and 2.5+.

So I have added a parameter to the function "g2" ( g2(r,a,R) = a + r; ) 
in order to create a link between the "a" in its definition "a+r" 
and the parameter "a" of both functions "F" and "G" calling "g2".

Now "g2(r,a,R) = a + r" and "g2(r,a,R) = a + 1" have the same behaviour,
which was not the case before for 2.9.4.

Jacques Gélinas