Hi Moises,

You can create new indexes using the INDEX command...

1- Which command line will create this tag ?

Index on YourField Tag YourTag

2- Its behaviuor will be the same as the tag created on the mody struct table

Yes. It is the same thing...
You should be carrefull with SET SAFETY state, because if you run the command twice, the user will be asked if he wants to replace the existing tag.

3- The cl.cdx that is there will accept the new tag ?

Yes. No problem here.

4- Is it wise to use the modi struct of the dbf as I do to create tags or is better to create the by command line ?

I create my indexes using the command INDEX ON ... I think it is better... but, like I said above, the behaviour is the same... ;-)

I encorage you to take a look at the VFP HELP, about the INDEX command...

[]s!