A great enhancement to Base would be to allow to put put text fields, like those
used for mailing, into Base forms documents. I mean something similar to
datasource, but using the current database instead of selecting one in the list,
and with fields displaying values form the current row. That way, I could type
some text, and include values from the database into that text.

For example, I could make a template letter, with fields for name and address,
and navigating into the database, I could choose and print only the letter I
need. It would be similar to mailing, but without the need of a document
external to the database. And it could be mixed with input boxes as well.

I saw a similar function in FileMaker Pro. In that software, if I put a field
name between < > into a text, this is replaced by the field value in Use mode.
But in OOo, fields would be better than using special characters to achieve that.