If you hold your mouse over them you'll get some handy helptags.

 From left, the Fn/Bookmark/Labels, etc navigator, the bookmark  
creator/installer, recently viewed functions, and the REM slider to  
adjust where comments display horizontally.

On Jan 31, 2010, at 9:53 AM, Emmett wrote:

> In the toolbar of a FB5 New File window are these icons:<Picture  
> 5.png>
>
> Would someone please explain each one.
> Emmett