Repeater function question

[Scott Winzinger <zing@sigecom.net>]

Will the repeater undo midi controller function allow you to do as
follows:

Record loop A
Stack B on top of Loop A
(then press undo)
Back to just Loop A
(then undo again)
Loop A with stack B? (or will it take away the loop A leaving you
nothing?)

Will it do this back and forth thing indefinetly?


Can I also record loops while I am MIDI to a Alesis effect processor and
trigger different effects via Midi with different loops?

I hope this is clear.

I'm so new to this thing as a solo acoustic guitar player.

Zing