how to upgrade to the newest GWT in eclipse?

Hi,

I am using eclipse with GWT, and I installed and upgrade GWT using the
google update site.

How can I be sure to always have the newest GWT libraries used in my
applications?

I was wondering about this because I found that after several upgrades
there are several GWT versions in my eclipse, e. g. "GWT", "GWT (2)",
"GWT (3)", "GWT (4)", ... I deleted most of them, but I wonder what
would be the best way to handle this.

And how can I be sure that a compiled app uses the newest GWT library?
Can I check this?

Magnus

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