Difference between fl and flash libraries?

(new to cs3 - java expert...)
I'm trying to write some action script to set the default
focus of a text component when the applications run...
It seems there is a fl.managers.FocusManager that
could/should do it... but for some reason, I cannot import that
package into my AS. I can import an arbitrary
flash.<something>.somthing.
Question - In the AS editor, there is a menu (plus sign (+)
icon) with all(?) the available packages/classes, languange
constructs, etc. Should I be able to use them all? Is there a
difference between "fl" and "flash" - assuming "fl" is for Flash
just like the product logo "fl"?
thanks a bunch.

Craig,
> Is there a difference between "fl" and "flash" -
assuming "fl"
> is for Flash just like the product logo "fl"?
The fl packages are top level classes based on ECMAScript,
while the
flash packages are specifically Flash Player APIs.
> for some reason, I cannot import
[fl.managers.FocusManager]
> into my AS
Are you writing timeline-based code, or a class file? Have
you tried
the sample code shown in the FocusManager entry of the
ActionScript 3.0
Language Reference?
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

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