fsolve operation, display output and constraints

Hello

i have to solve this non linear eq F(x-x0)=0; more this eq is normalized as (x-x0)/x0 - F'(x)=0; so the second hand term is the evaluation on the accuracy of the current solution. With the 'display-iter' option i guess i should see under 'f(x)' column the current value of the second hand term of eq. And i guess (once more) i could choose when to stop iterations matching Tolfun to the accuracy i would like to have. I mean if i need a solution with F(x)<0.01, i set TolFun=0.01 then i should see under 'f(x)' column it stops immediately as 'f(x)'<0.01. This simply doesnt work, as i cant find enough reference on fsolve operation i hope someone can explain briefly some more about it. Thank you everyone in advance.