[Click] Question about Element functions

[Cong Guo]

Hello guys,
 I'm new to Click. I really need your help.
 My first question is about the functions of "Element", initialize and
cleanup. When will the two functions be called? Do you define some stages?
Where can I find the document?
 And, where is the definition of the function ninputs()? What's it for?
 Besides, how can I use the test element like confparsetest? What's the
script like? Is there any advice about debugging and unit test?
 Thank you very much!


Thanks,
Cong

-- 
Cong Guo

David R. Cheriton School of Computer Science,
University of Waterloo, Waterloo, ON
N2L 3G1