Diff between set and setenv

[leein at uicsrd.csrd.uiuc.edu]

Hi,

I have questions that some gurus might help with.

In a csh under BSD

1.  There are things that are to be 'set' and things to be 'setenv'.
    What is the difference conventionally or logically?

2. What variables should go to .login only, and what variables should 
   go to .cshrc only?

3. What set and what setenv variables
   can be transferred from the login shell to the newly created shells?

4  Where in the UNIX manual can I find those things in a well organized
   form?

Thanks.

                In