First of all thank you very much for your answer.
I think I haven't explain very well:
1. When I add a source or a general note they are saved in ged file as @SXXXX@ and @NXXXX@ (for instance @S00001@ and @N00001@). I want to save my genealogy without them but I don't know wich tags I need to use in the box "Exclude the following Tags (or Paths)" for excluding them in the new ged.
2. If we know the date of death of a person, it appears in tree view inside the rectangle of that person and that's enough; but if we do know that person is dead but not the date, there is no way of distinguish from living people unless you open Gedcom editor and check if "Known to have happened" chekbox is marked. I think it would be interesting a sort of mark in tree view for those situations. Customize in tree view, in the way you have indicated, makes a cross appear for both the living and the dead.
3. If two cousins are married they have to appear twice in tree view, each one in different branches. Lets suppose A and B are siblings and A1 B1 their childrem. If A1 and B1 get married A1 and B1 should appear both in branches of A and B if the parents of A and B are selected as root; but there is no visual evidence that this happens. Only if you are lucky and click on one of them it's possible to see them in the small representation of the whole tree as two tiny red boxes. I think it also would be interesting another kind of mark indicating those individual appear more than one time in tree.
1-) In this case, it is probably better for you to use an editor like: jEdit ... then find and/or replace your paterns (for instance @S and @N etc).
2-) In this case you can add this (and check into gedom-editor at DEAT "This event has happened" but the date is unknown)
<prop path=INDI:DEAT>
3-) For that, I do not know how to proceed , but your request seems to be interesting: "I think it also would be interesting another kind of mark indicating those individual appear more than one time in tree."
...You're welcome,
Regards.
Edit: for 2-) and with the latest Ancestris version up to date, you also can do that:
<br><prop path="INDI:DEAT" format="{(*)$e}">
Or
<br><prop path="INDI:DEAT" format="{(Dead)$e}">
*-) "And for living ones the actual age?"
And for your previous request, I fully support too
(a new tag today-age = today - birth-date) can be related to the age tag into birth (gedcom editor) ?