COMPARE features

Group, 
I am trying to use the COMPARE feature and it acts differently than the 
COMPARE function with CODE/400........
I select EDIT 
        COMPARE and a dialog box opens for me to select my library, my 
source file, and finally my source member. 
I would love to be able to select two programs in my filtered list and do 
a compare that will bring up color coded differences of the programs AND 
allow me to edit the source while in the compare mode-similar to what 
CODE/400 allowed us to do. 

Am I missing something with this COMPARE feature? 
Also, I know that when I select two programs, I can "COMPARE with each 
other" - but it is a simple compare, not color coded features, and again, 
I cannot edit the source in the simple compare mode. 

Any hints on the COMPARE feature would be great! 
Diane Mueller
infosys5@xxxxxxx