Logic trace functionality in RS Logix

Hi friends,

Can anyone elaborate on the " Logic trace functionality"
and "cross reference navigation" features in RS Logix?

These are new features in version 5.5 & above.

I don't have this version but am curious to know
about these features before I decide
to invest in the new version.

I tried AB customer support but could not get
an understandable answer and therefore I am
reaching this forum.

Thanks in advance for your time.

Kailash Mariappan
Eden Prairie, USA.

Here is a link to an explaination of the cross reference navigation. The link is talking about RSLogix5, but RSLogix500 is the same.

The "logic trace" functionality is only available in RSLogix500 PRO. I have the standard version and have seen no need for PRO yet, so I don't know about the "logic trace"...