Inconsistant URL launch behavior from tab

Greetings all,

I put in a custom tab, Documentation, on the player for two versions of a SL quiz that will launch a .pdf when clicked. Except for some content differences, the two projects are the same but one launches the URL in the same tab--not what I want--and the other launches it in a new one. I can't find any setting differences anywhere. (Probably hidden right under my nose. <grin>  ) Can anyone help?

Thanks,

--Allen

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