Items other than Images in Container Fields?

[Lefo]

I am trying to make certain I'm doing the right thing with a database with a container field. I would like to somehow have a link from FMP 5.5 to a WordPerfect text file. When the link is clicked, the file linked in the container is opened in its native app (WordPerfect). I have successfully done this once, but I want to make certain that I'm not risking the original file in any way, and that a container field is exactly the right way to link to this file.

Is this the purpose of the container feature, or is there a better solution?

TIA

Lefo