Can the implicit "bsf" variable be renamed ?

[Dmitry Goldenberg]

Folks,
 
Is there any way to rename the implicit 'bsf' variable available to the bsf 
script authors?
 
Also, is there a summary of all the methods (besides lookupBean) available on 
it?
 
How does one go about adding new methods on the bsf object - is that even an 
option?
 
Thanks,
 
- Dmitry