Re: Emacs and C++

>2. Almost all commercial IDE have a feature called "tagging". For
[...]
>them. Is there such feature for Emacs?

Yes. Have a look at ctags or etags (I don't remember which does what, 
or when).

>3. How can I run my console program in Emacs console instead of
>default terminal emulator (such as xterm)?

I'm not entirely sure what you mean, but try any of these:

M-x term RET
M-x shell RET


>6. How can indent using spaces (4 spaces in one tab) but when I press
>Backspace after indenting it will erase 4 spaces (as if I inserted tab
>character) ?

Hm. Not sure on that one. As soon as you press tab, you could undo 
(C-_ or C-x u) to remove the "tab", but it will only work immediately 
after you type it.

>9. How can I set small left margin in Emacs editing window thus making text
>start not from the edge of screen but some millimeters from it?

That depends on your Emacs-version. In GNU Emacs 21.x, I think this 
feature is called a "fringe", but I am not 100% sure about that.


-- 
Friendly,

Rikard