With the issues with the user database, it looks like the blog post from the user (GridViper) who originally submitted this is orphaned or gone altogether, so I'm going to repost it.
GridViper was looking for a way to open a new browser window from bmenu menu items. Finding nothing in self-service documentation, he exploited the URL field in the menu item edit page:
After specifying the link/document in the URL* field, leave one space after the link/document and type in the following with double-quotes:
"target=_blank"
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