editing a text file in a tar.gz file without decompressing

[Calber Chainy <chainy@infonegocio.com>]

Hello list,

I think there is a simple application for this, but don't quite
remember.

I have example.tar.gz, and I know in it there is a file named
document.text, a plain text file that I want to edit.

So I wondered if there is such an application that I can edit
document.text without having to untar and decompress the file.

Thanks for any ideas.

Chainy.